My baby will cry all night if I introduce diary and cows milk. So I stopped completely giving it to her and I am using other alternatives diary free
I’m the same
She can have dairy in foods but straight milk made her wake up crying in agony so I’m gradually introducing again
It might be too rich for him as an actual drink , try a dairy free version and keep to dairy in all other matters and see what happens?
this is the same for us, i have only just started adding to breakfast and she’s pooing after every milk and food feed she has since i have started adding it to her breakfast, not sure if it’s just a coincidence and there is something else going on but too nervous to add any to bottles, she has other dairy like yoghurts, custard butter etc without any issues