One month old struggling with milk?

[TheScience]

I've had some minor issues with DS2 from the start. His latch hasn't been great - not opening his mouth wide/getting a deep latch - and at 3 weeks old we had a moderate tongue tie cut. Feeding didn't miraculously improve and I still have to latch him on carefully and often have a few goes before we get a satisfactory latch. He also falls off a lot himself.

Increasingly though he seems to gulp and choke during feeds, he dribbles milk while feeding, vomits during or after feeds (not huge amounts), feeds noisily with smacking/clicking noises, and often I can hear milk has "gone down the wrong way" and he pulls off coughing and spluttering. He's also a lot windier than DS1 ever was.

Any ideas on what is going on and how I can improve things?

Have you had a beast feeding counsellor or lactation consultant observe a feed?
Is he choking and gulping through the whole feed or just the start? If the latter cold be you have a fast let down and he's struggling with that, you could try expressing off the first bit (save it in the freezer for if/when you want to introduce bottles).
Well done on persevering, hope you get it sorted and can relax and enjoy feeding your baby.

No, haven't had anyone observe a feed. The nearest bf group to me just has peer supporters but I could travel a bit further to find one with a bf counsellor after the holidays.

It's not at every feed now I think about it, and seems to be better at night lying down (although he does still posset/vomit/burp a lot at night). The choking and gulping can happen through out the feed though.