as soon as possible my daughter saw her doctor and we r going to an ear nose and throat specialist in a few weeks...his doctor will say he doesn't need it fixed if he is growing like he should but make them give u a referral to see someone to fix it!
have u checked to see if he has a lip or tongue tie? have u tried a nipple shield? my baby would latch great for the first 6 weeks then she just wouldn't latch no more and turns out she has a lip tie...I'm pumping every two hours til it gets fixed and hopefully she will latch when it gets fixed!