HUGS, how old is your LO? If he's nearly 1 year, and you don't have enough bm for him to have a bottle at day care you might find the change in routine there (ie being in a different place) will mean he'll start to skip the middle of the day feed.
My DS was still bf up to 4 times a day when I went back to work with him being just turning 1. He refused bm in a bottle, refused cows milk, and he just skipped those feeds while he was at day care. He filled up on solid foods instead. My DD used to have a bottle before EVERY nap when she started daycare and that stopped there too, but continued at home. Different place, different routine/people.
Hope you find some answers and find the soy milk goes better
