I agree the coaches will have the best info. The approach might vary by school, conference, division. But really, this is one of those details that is pretty far down the list of priorities for ADs right now, and may become a non issue if some sort of testing resumes in the summer or fall. If no testing happens for the next six months or so, the conferences will figure something out and the NCAA will need to make some changes to eligibility requirements.
As far as the more selective schools, Ivies and others, that typically try to get recruits admitted during EA/ED, there’ll probably be some changes to give coaches more flexibility. For example, coaches at some of these schools have always had the ability to push a ‘late’ ED app through; I wouldn’t be surprised to see the ED deadline extended into winter for athletic recruits at schools that typically use it to ‘lock in’ supported recruits.
I’d think most recruits in this round, rising seniors, likely have at least one score in hand anyway, even if they aren’t happy with it.