When Presidents propose a bill or plan, congress still has to draft and pass the bill in full, bc it includes more than just "issue this check."
So ask your congressional rep where your checks are, because it's on congress to get it through.

Biden did sign an executive order last week to push the treasury to expedite delivery of the initial $600 payment that was already approved in December, because a lot of eligible folks still haven't received it, even though the deadline for disbursement was Jan 15th.

Y'all wanna hold Biden to his promises this term, hold your folks in house and senate to theirs, because it's their job to negotiate plans and bills and pass them. Not everything can be done through executive order. Biden's ability to do what he says is reliant on them.

The proposed American Rescue Plan hasn't even been approved by congress yet - they couldn't start work on drafting the bill before he was sworn in, but *they* are the next step to your money.

Yes, that exact congress (senate may be 50/50 but Dems are in control and Harris has the tie-breaking vote), because they couldn't start work on this until Biden officially took office.