Have a couple questions about my 6 month old baby!?

My sons seven going on eight monthes and still not making the mkst effort to hold his bottle,shell get it in time theres not much to do about it unortunately.i struggle with that too.the tummy thing,some babies just dont like it and never warm up to it.my son also disliked it its common but again in time shell learn to crawl,sitting up is really the gateway to that anyway.the iron thing,id stop trying to force it and just give her iron fortified formula or solids,or infant vitamins.:)