Yeah maybe I’m the wrong guy offering advice here
It was not a waste because if you hadn’t done that you would have continued to further detrain. It’s great you’re getting back into the swing of training! F*ck COVID!
As for not being able to walk - you just gotta suck it up, buttercup, as they say. Best thing for it is to take frequent walks and do some mobility/rolling a couple times per day, and I know some people use NSAIDs, but you just have to bite that bullet initially most of the time, regardless of weight used even. A lot of people actually have some success going back sooner than usual to repeat the lift, even though they’re still sore.