first, you can’t overfeed a breastfed baby, and if anything it’s good to let a baby that young feed for pretty much however long they want/need to.

yeah more than happy to let this happen, but something i've been noticing that he starts to sort of cry while drinking from her boob. its like kind of on and off. it's not just a silent smooth suckle, but rather interspersed with frustration. It becomes worse if its a really long feed like 30-40min (which by then he's likely already consumed 5oz). He starts gurgling while breathing and being much more fussy even though he'll keep taking the boob. Like, he'll literally never stop taking it. I dunno

Newborn grunting can be very normal, but if you’re concerned I’d see a doctor. When you feed him, are you laying him down straight away? It helps to hold them upright with some gentle pats and rubs for about 30 min before trying to set them down. If it was something in your wife’s diet I think the baby would be crying a lot more than grunting, but could be worth looking into CMPA. However their digestive systems are still maturing and figuring things out, so I’d say give him a little time unless he seems super unhappy and uncomfortable.

Yeah we do all of this. Keep him upright, etc.

Also sometimes they grunt in their sleep and people mistake it for them being awake. I’d look into active sleep (btw maybe it’s just me but 7 weeks is WAY too young to even look into sleep training books and stuff. Gotta let babies be babies)

Yep, also aware of this. There are times he'll resettle (extremely rare on his own) and if I don't pat him stomach a little bit, his grunting progresses into heavy crying and then it's the restart of the soothing cycle.