H1B amendment processing time

How much does it take to get receipt for H1B amendment in normal processing as premium is being stopped from Apr 3,

Does USCIS accept premium applications till Apr 2.

The usual turn around time for a normal processing receipt is 7-10 business days, but can take longer if filed during April’s new filing season.

Yes, USCIS will accept premium processing for cases filed prior to April 3.