Can a baby bottle help a baby feed himself?

Carlton is now six months. The OB doctor suggested that he should be 100% on formula because the baby inside me will need the nutrients. Carlton started learning how to hold his bottle but first he needed to understand gravity laws in order to take a sip. I thought to myself, if the baby bottle had a straw attached to the nipple he’d be able to get the milk. It took him weeks to figure out he needs to turn the bottle upside down. Every time he fed himself while sitting up, his neck will turn all the way back, I could see he was very uncomfortable. He took a couple of brakes so that he could rest his neck before he finished a bottle.

There’s a point that needs to be addressed, a baby bottle should help the baby feed himself.