It's always best to. In case if AOS rejected or denied, you'll have status to fall back to. If you don't maintain F-1, you may become out of status if denied, and subject to deportation. Recently quite a few people got NTAs pretty quickly after AOS denial.
Biometrics for AOS is just the beginning of the process. You may have to wait for months to learn whether you're approved or denied, and probably have an interview too.
By the way, even before COVID, maintaining status was recommended by my lawyer when I was adjusting. Now it's even more recommended.