I must say, it seems a bit odd - as pp pointed out, if you have Covid, the baby probably has it too. I can see the logic but still. Our childminder (who we know well as our eldest has been going for a while) had me and DC2 round for a play, and then next time I left DC2 for a short period.
I really sympathise, mine is a lockdown baby too, though we’ve dipped in and out of baby classes when able to, but he’s never been left with anyone other than me and DP. But despite this, he has settled very quickly after a few wobbly settling-in sessions - we had him do a week of half days before he started full days.
Honestly, I think our childminder was more nervous than me - she has another lockdown baby as well who has struggled to settle, so she was worried. But he has been ok and we now have tear-free drop-offs after a couple of months.
In terms of what I would expect the childminder to want to know, ours still had me fill in loads of forms and wanted to know about nap times and how he’s used to being settled, food/allergies, how I serve food (eg to what extent do I purée/mash food, how confident he was with finger foods), how much milk he was having/whether he took a bottle and when he was used to being offered milk, any medical issues, any fears, did he have a comforter/dummy, and that’s just the stuff I can think of off the top of my head.