A May date will be fine, stay calm and focus on your MCAT prep before the test.
After test day and some sleep, log in and work on your primary app.
I will post a new thread for the 2021-2022 application year pretty soon, with a new timeline & all.
I do know that for 2021-2022 cycle:
The updated TMDSAS instruction handbook will be available in mid-April.
May 3 is the first day to log in and start work on the app.
May 17 is the first day you can hit "submit".
Why can't I submit it the first day? So you can and will proofread your app multiple times, print it out and read the hard copy to be sure you didn't leave any blanks or errors, and be sure about it before you submit. A hurried app may contain glitches, and there are very few things you can change or add once you submit your app.
It will take 3-4 weeks for TMDSAS to verify your primary app, and by then your MCAT score will be ready.