If I've filed for 2020 and qualify for the 3rd stimulus, does my 2020 return need to be PROCESSED by the IRS or just accepted in order to get the direct payment?

Because everyone is recommending filing for 2020 immediately if your AGI was lower in 2020, in order to get the 3rd stimulus, but nobody has said whether the IRS has to actually approve (process) your return first or whether it's enough to just e-file and have it accepted. The IRS seems to be taking an unusually long time this year to process returns. I can't find the answer to this question anywhere, thanks!