4 month baby boy

My baby did this at 4 months. I was told by several people it was normal. Most of the time I would put her back on a few times just to make sure she had enough milk. Generally by the 4th or 5th time I would stop the feed

4 month fussies!
Try to relax & reduce distractions while feeding for a couple weeks then gradually reintroduce busier settings.
Check there’s no trapped wind before latching as that can often make them want to feed but then they get frustrated when boob doesn’t fix it.
Try and upright koala style feeding position, and side laying in the c-curl.
Just remember that the fussiness is normal as they go through a huge developmental leap at 4 months and as long as they’re gaining weight as expected it’s not a reflection of your supply ◡̈