Baby windddd help

Hello,

have a gorgeous relaxed 6 week old boy. I have one issue main issue WIND. My, now 3 1/2 year old, girl never had any issues although I did bf her. he seems uncomfortable quite quickly during after feeding i burp him, sometimes he does several burps and still seems uncomfortable. Only taking 3oz every 3-4 hours. Has crying episodes some evenings, where he is clearly very uncomfortable. getting burps up when he's asleep in extreamly hard and he just seems to have so much. Currently on SMA comfort, MAM bottles, size 1 teets and has dentinox in each bottle. poos are very lose sometimes quite watery which I was surprised about being FFed and seems to cause discomfort for a while before pooing as if he's constipated. Sometimes thicker sometimes very runny, never hard. Green and smelly also smelly bottom wind.had some reflux too. Any ideas anyone????? The annoying thing is (apart from feeling bad for him and he's discomfort) it seriously prevents him falling asleep and he's more than happy to go off otherwise alone in basket. my daughter was a terrible nap/sleeper so am very keen to help him self settle. this wind is really inhibiting it....sorry for essay thanks in advance xxx