LO is 9.5 months and recently has started fighting us with the bottle again. She will keep a mouth full of BM in her mouth and not swallow and then basically let it all spill out after spitting out the bottle. We've been switching back and forth between size 1 and 2 nipples as well, and she fights them both.

Has this happened to anyone else? Any advice or suggestions? Please tell me it's just a phase.