Weaning and boob

Just looking for a bit of advice girls. My baby is 7 months and pretty much fully weaned now. Has 3 meals a day and boob in between and then usual feeds through night. However I’ve started to notice when she is having boob she’s not taking much anymore She’s started going to nursery on a morning and yesterday when I picked her up they said she just wasn’t interested in the milk at all. She’s always taken expressed milk from bottle fine before. Is this because she’s more full and maybe just using boob for comfort as opposed to feeding now? I’m just worried that if she’s refusing milk from bottle that she’s not going to get all the nutrients