There are less than two months until the next government funding deadline on March 14, and House lawmakers are growing increasingly concerned about the speed of their progress on spending talks.

"I think it’s a complete failure for us to not have a topline number," said Rep. Cory Mills, R-Fla. 

Congressional Republicans have been busy negotiating a massive conservative policy and budget overhaul via a process called "reconciliation," which allows the party holding both the House and Senate to enact sweeping changes by lowering the Senate's threshold for passage from 60 votes to 51.

But all the while, Republicans who spoke with Fox News Digital are worried about falling behind on the federal appropriations process for fiscal year (FY) 2025, with no topline funding numbers to work from yet and just 19 days left in session until the deadline.

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Congress has extended the FY 2025 deadline twice since the period began Oct. 1 – most recently passing a short-term funding extension of FY 2024 funding levels, known as a continuing resolution (CR), in late December.

"Appropriation bills have to get done. If we end up with another CR, that would be catastrophic. That would mean, in essence, a reduction on defense [funding]," said Rep. Mario Diaz-Balart, R-Fla., a senior member of the House Appropriations Committee. "But for us to start doing it, we need a topline number. But I’m optimistic we’ll get there."

If nothing is done by March 14, Congress could be forced to contend with a partial government shutdown in the middle of their reconciliation talks – and within the first 100 days of President Donald Trump's second term.

Other members of the committee suggested they were similarly in the dark about a topline number, but were cautiously hopeful.

"We are less than eight weeks away from the CR expiring. We need to be able to get those toplines as soon as possible and get to work," said Rep. Stephanie Bice, R-Okla. "I have full faith and confidence that Tom Cole will be able to make that happen in the next week or two."

Rep. Mark Alford, R-Mo., said House Appropriations Committee Chairman Tom Cole, R-Okla., has been "in consultation" with his counterparts on a towline number.

Asked about the possibility of another CR, he said, "We have several things going on at once – the reconciliation package, raising the debt ceiling, and the appropriations process. So let’s just hope for the best and deal with the worst if we have to."

Republican leaders have previously been forced to seek Democratic support to pass CRs, which normally hit a wall of opposition among a cross-section of the GOP.

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Conservative hardliners told Fox News Digital they're bracing for another CR or, worse in their eyes, a massive package combining Congress' 12 regular appropriation bills into one massive "omnibus."

Rep. Ralph Norman, R-S.C., said he and other conservatives were working on a bill to keep border security operations funded in the event of a government shutdown.

"We’re running out of time," he said, adding that Republicans should "probably stay in next week" instead of flying to their annual issues conference in Miami.

Rep. Keith Self, R-Fla., pointed out that House lawmakers have just over two weeks' worth of days in session to come up with a plan.

"I'm very concerned. I'm also concerned that if we screw up the CR on March the 14th, does it poison the reconciliation negotiations?" Self posed.

But not all conservatives are concerned. House Freedom Caucus Chair Andy Harris, R-Md., said he would be in favor of a full-year CR if "we write it properly."

"You tell me what the topline is, and I'll tell you whether I'm concerned," he said.

Fox News Digital reached out to congressional Republican leaders and the House Appropriations Committee for comment.

A partial government shutdown began at 12:01 on Saturday morning after Congress failed to pass a stopgap spending measure before the deadline and send it to President Biden's desk.

However, the Senate is actively working through amendment votes and other considerations in order to send the measure to Biden. The stopgap bill is expected to be passed in the Senate in the coming hours. 

The partial shutdown comes only days before Christmas and New Year's. 

As of Thursday, the U.S. national debt was at $36,167,604,149,955.61 and was continuing to climb rapidly. 

During a partial government shutdown, federal agencies and non-essential services are stopped, but some functions that are considered "essential" will continue. Certain national security functions, such as border patrol, law enforcement and disaster response, will remain active during the shutdown. 

However, because the Senate is expected to move the bill forward imminently, the disruption to government function will be minimal, if at all noticeable.

An original agreement on a short-term spending bill was released earlier in the week, totaling 1,547-pages and including a number of policy provisions and disaster aid. 

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But soon after its release, billionaire Elon Musk and other conservative critics publicly blasted the measure, ultimately resulting in it being condemned by President-elect Donald Trump and Vice President-elect JD Vance. 

The initial spending measure would have extended government funding levels for fiscal year 2024 through March 14 and provide over $100 billion in disaster aid for those affected by storms Helene and Milton in the U.S. Southeast earlier this year. There was also a $10 billion provision for economic assistance to farmers in the bill. 

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The size of the bill, along with several of its other provisions, including a cost of living raise for lawmakers, prompted the public reaction from Musk and others. 

After heading back to the drawing board, House Republicans emerged on Thursday with a new proposal. The revised measure would have extended current funding levels for three months and included a debt limit suspension for two years, per the request of Trump. 

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Additionally, it had economic relief for farmers and about $110 billion in disaster aid. 

But the bill failed on the House floor Thursday night as Democrats united against it and a significant group of Republicans opted to oppose it as well.

By Friday morning, there appeared to be no agreement between Democrats and Republicans in Congress to work together on a new bill. In fact, Senate Majority Leader Chuck Schumer, D-N.Y., and Senate Appropriations Committee Chairwoman Patty Murray, D-Wash., said the government would go into a partial shutdown at midnight if Republicans did not return to the original stopgap bill. 

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"I'm ready to stay here through Christmas because we're not going to let Elon Musk run the government," Murray said in a statement. 

The House managed to pass a third version of the spending bill on Friday. It was similar to the second version, including both economic relief for farmers and disaster aid, but did not have the debt ceiling suspension that Trump had been adamant about. 

The bill received broad bipartisan support in the House and the green light from Biden, as the White House said he'd support it. Even Schumer released a statement after the House's passage, saying he was "confident" it would pass the Senate. 

When the federal government shuts its doors, Americans get a glimpse at a long-debated question in Washington: How much government is too much? Here's what happens during a partial government shutdown, which typically happens when Congress has failed to pass new bills authorizing spending.

Federal agencies and services deemed "nonessential" can expect to halt their operations, while "essential" services continue to function. Examples of "essential" agencies include national security, Border Patrol, law enforcement, disaster response and more. 

What's more, funding for certain programs, like Social Security, and some agencies such as the Postal Service operate separately from the yearly appropriations process.

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A shutdown lasting less than two weeks would likely have minimal impact, as federal employees would still receive their paychecks on schedule. Longer shutdowns, meanwhile, are usually accompanied by retroactive pay for government workers and congressional staff. As a result, the actual effects of a shutdown tend to be far less severe than how it's typically described.

Partial government shutdowns can also be seen as an opportunity by some lawmakers to address unsustainable federal spending. The U.S. national debt exceeds $35 trillion, and many argue that allowing the government to function indefinitely without addressing wasteful spending is irresponsible. Shutdowns can thus force Congress to make decisions about funding priorities and eliminate bloated programs.

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The federal government’s fiscal year runs from Oct. 1 to Sept. 30, requiring Congress to pass a set of appropriations bills by the end of September to fund operations. If Congress fails to act, legal safeguards prevent executive agencies from spending money without legislative approval, effectively limiting government functions.

The annual congressional budget process begins in early February, when the president submits a budget proposal to Congress, offering recommendations for federal spending across all areas of government. 

By mid-April, Congress is expected to adopt a budget resolution that establishes overall spending limits and guidelines. Throughout late spring and summer, House and Senate Appropriations Committees work on drafting 12 bills to allocate funding for specific federal agencies and programs. These bills must be passed by Congress by Sept. 30 to prevent a partial government shutdown.

The deadline to pass a continuing resolution (CR), which is a temporary funding patch, is 11:59:59 p.m. ET on Friday. Without one, the federal government enters a partial shutdown on Saturday.