Three years after resigning the governorship in a cloud of scandal, Andrew M. Cuomo is making final preparations to run for mayor of New York City and could announce his candidacy as soon as this weekend, according to four people familiar with the planning.

Publicly, Mr. Cuomo, a Democrat, continues to guard his intentions closely, avoiding media interviews and unscripted public events. He has been conspicuously silent on the scandal engulfing his potential opponent, Mayor Eric Adams.

But behind the scenes, the former governor has taken increasingly assertive steps to line up a long-anticipated comeback attempt that would instantly reshape the race to unseat Mr. Adams in June’s Democratic primary.

Wealthy donors have committed to host fund-raisers at Manhattan apartments as soon as next Tuesday. Mr. Cuomo has personally begun prodding additional Democrats to publicly back him — including the Queens borough president, Donovan Richards, and the Manhattan party chairman, Keith L.T. Wright — as he tries to extend a rollout of high-profile endorsements that began with one from his former rival, H. Carl McCall.

And he is expected to tap the political director of the New York City carpenters union to take on a senior campaign role.