I’ve been doing it every other day for years and although I see few people in person these days, I’m sticking to my regimen.
With no outside contact, it’s easy to stop shaving. Or showering. Or getting dressed.
And since you’re not going anywhere, it’s also easy to stop exercising, or eating dinner at the normal time, or doing all the other regular, mundane things you did without thinking every day.
Try to keep doing them. These routines aren’t just about how you appear to the outside world. They also help you feel mentally on track.