J.R.
I am not trying to be mean but I wouldn't even consider weaning him at this age. Babies need breastmilk until at least 2 and this comes from WHO as well as Acadamy of Pediatrics. I would try to get him to take it out of a regular cup and have someone hold it for him or maybe just keep trying from a sippy. Definatly don't give him regular milk as babies are not suppose to have cow's milk until 12 months.