LO Refusing Bottles of BM

Hi ladies. I'm hoping you can help me!

I am a teacher and recently started back at work. LO went with my parents for a few hours a couple days in a row, and has now been at a new daycare for 2 days. She refuses to drink from a bottle. We did not have this issue after she was born; she took a bottle with no issue from February to June.

DCP and my parents both tried several different bottles, a sippy cup, warm/cold/room temp milk, feeding with one of my shirts on, inside/outside, and in a quiet room. Nothing has worked. She will eat solids.

I am concerned because we are away from each other for 9+ hours a day and she is not drinking anything. She nurses 3-4 times overnight, which I had thought was comfort nursing to get back to sleep. I think now she is waking because she needs the calories (the several wakings occurred before the bottle refusal).

Is this reverse cycling? Does she want more solids? Do I just keep trying different bottles? Is this just part of the transition of me going back to work after a summer together? Thanks for any advice you can give.