My LO (12wks old) has been using the MAM bottles since he was 4wks old. 2 weeks ago we switched him to the number 2 nipple for the bottle and initially it went fine. The last few days while he eats he is just letting it run out of both sides of his mouth and it's making quite a mess.

Should I try to switch him to a different bottle? Any recommendations which one I should try?