Hi ladies just wanting some opinions, I have an 11 month old bubba and he is breastfed and on solids 3 x plus snacks. I have a day out probably around 12 hours, do you think it would be a problem if bub had formula for his milk feeds? (That is if he takes a bottle). I have a crappy breast pump and can afford a good one, so I don't get much out. Thoughts?