if he takes the cup, then that is great!
My DS is now 15+ months, but at 3 months, when I went back to work, he totally refused the bottle.
I was at a complete loss. It was so anxiety-producing, so I definitely have been there!
We tried EVERY SINGLE BOTTLE UNDER THE SUN, and I am not kidding.
The Adiri ones actually were the most confusing for him. I think he was like "you must be KIDDING if you think you're fooling me into thinking this is mom's boob"
So, the first day he was at daycare he had to be fed with a medicine dropper for the first feedings! Yup. THat's how stubborn.
My first day back at work, and I know my kid is eating from a medicine dropper - it was awful. But by the end of the day, he took the bottle!
Ultimately, it was the simple NUK bottles with the flatter nipples, and we stuck with those the whole time, but in retrospect I don't think it had to do with the bottle style, more just with me not being there and him being really hungry, poor thing.
He never really loved the bottle after that, and would sometimes put up a fight with different people - but ultimately got that if he was going to eat, he'd have to drink from the bottle and so he did it, however grudgingly.