My DS did this. I'd go back to baby led attachment, lots of skin on skin, if nothing else it calmed him down! He eventually went back to feeding without crying or coming on and off, but he did have a few more blocks of the crying/on/off feeding during the first 6 months. For us, it just became part of our normal, it was a thing he did every so often and I tried not to overthink it (very hard I know!) As long as his output was still fine I just went with it. I did get to feed him in lots of interesting places and ways because of it, he fed better outside under a tree, in the bathtub and if I swapped positions everytime he cried or got fussy.

Hope it works out for you guys and it's just a week or two before he's a booby fan again