DS is 11 weeks and feeds pretty much constantly through the day but I realy need to get my haircut and don't want to take him because of the smells etc. I am guessing I could be up to 4 hours (having a perm ) which I also need to know if it's Ok while BFing (no idea what they put in your hair), but have no idea how much to express. And will those closer to nature bottles be ok, or should I get something else? Thanks so much