Hmmm, have you tried bottle with breastmilk? Will he take a bottle first and foremost?
If yes, then what you need to do is "trick" his palate by very slooowly weining him. You want to start out with 1 part formula, 3 parts breastmilk (example: In a 4 oz bottle, 1 oz formula to 3 ounces breastmilk.) You want to do that for 2 days, then go 2 parts formula and 2 parts breastmilk for 2 days, and then 3 parts formula to 1 part breastmilk for another 2 days. He won't even notice the taste, and doing it this way allows his tummy to get used to it.
Also, consider the kind of formula. Noah was breastfed for 6 months and hated formula. But he did love Enfamil A+ (Premium in the States). It is a little on the pricey side, but after about a month on that I switched to the Enfamil with Iron and he has done great!
at 2:56 AM on Mar. 16, 2010