I only washed bubs hair once a week as it strips the natural oils. As for the bottle question I couldn't tell you. I breast fed, but when he did get to bottles when he was older I used to wash in really hot soapy water then rinse in hot water then air dry.
My mom told me that you only need to boil the bottles the first time then either dishwasher or soapy water wash really well.
You can give babies baths you. Just can't get there cords wet, that's why most people prefer to do sponge baths... if you wash her hair alot make sure to use some baby oil after
i gave my baby a bath even with the cord... because the nurses in hospital gave him his very first bath, and they didn't say anything to me about not giving him a bath..its only after his cord fell off that i read that i was supposed to give him sponge baths instead of proper baths.. hes cord fell off properly and his belly button looks okay, so i think you can give him/her a normal bath and wash hair..and giving a bath is okay about once or twice a week
I wouldnt wash her hair every day, just every other day. And the bottle and nipples i wash then rinse, then put in boiling water for 5 seconds for nipples and 7 seconds for bottles. Dont want them to melt lol... Trust me, it can happen.