S.H.
Cups requires a different "sucking" method, versus nursing...it is 2 different techniques. For some babies, this causes confusion. ALSO, maybe your baby still has his tongue-thrusting reflex, and thus, he is not ready to drink from a cup.
Just wait, and keep trying every couple days. He does not sound ready yet.
I like the "MAM" brand baby bottle... it also does not have the plastic BPA"s in it which can leach into our bodies. You can get it at www.amazon.com Just type in the search word "MAM baby bottle"
Just make sure he is getting enough intake. Don't take away nursings for him.
My son had no problem transitioning to this bottle when I was breastfeeding.
Good luck,
~Susan
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