Former Assembly Speaker Sheldon Silver appeared in court Thursday to make his new lawyer official, but that attorney will still have to be ready by the old April 16 retrial date, a judge ruled.

Silver’s new lawyer, Michael Feldberg, pleaded with Mnhattan federal Judge Valerie Caproni for more time, citing the more than 1 million pages of documents in the case.

“There is a tremendous amount to learn,” Feldberg said.

But Caproni retorted, “Mr. Silver knew there was going to be another trial months ago.”

Silver’s former lawyers, Steven Molo and Joel Cohen, said he switched reps due to financial pressures.