Newt Gingrich will reduce his campaign schedule and lay off a third of his staff in order to keep his presidential bid afloat until the Republican National Convention, according to a senior aide.

Campaign manager Michael Krull, who took over after a mass resignation staged by staffers last June, will be replaced by deputy campaign manager Vince Haley.

Another dozen staff members split between campaign headquarters in Arlington, Va., and in primary states will be let go by the end of the month, Gingrich communications director Joe DeSantis confirmed to The Hill.

Gingrich also will reduce the pace of his campaign in future primary states, instead relying on social media and internet advertising to convey the campaign’s platform.

The strategy shift comes at a critical time for the former speaker, who hopes to stay relevant in a bruising Republican primary where he has struggled to gain traction against rivals Mitt Romney and Rick Santorum. And it will raise questions about the viability of his campaign.

Gingrich has long said his goal is to stay in the race until the Republican convention in Tampa, Fla., in August.

But he has a problem — money.

He admitted to NBC News earlier Tuesday that “money is very tight” with his campaign.

“I have the money to keep going,” Gingrich said while campaigning in Baltimore. “We’re working through what it is going to take to get [to the convention].”

His other problem is delegates. He’s admitted he wants to keep Romney, the front-runner, from reaching the 1,144 delegates necessary to clinch the nomination.

He has only won two states, however: Georgia, the state he represented for two decades in the U.S. Congress, and neighboring South Carolina.

According to the latest delegate count by the Associated Press, Gingrich’s 135 delegates significantly trails Romney’s 568 delegates and Santorum’s 273 delegates.

READ MORE: THE HILL