My baby (4.5 months) is now finishing her 5 oz bottles but often spits up or vomits quite a bit after (either immediately or after an hour or so). Does this mean she is not self-regulating her intake or is it just mild reflux? I thought reflux should be reduced by this point. Would you increase the size of the bottle now or wait til she spits up less? It’s not just a matter of making a bigger bottle as it’s also the cutoff between the small and large Mam bottles so I’ll need to switch all her bottles when we go up to 6oz or more.