DD was bf for 2 weels mixxed for 1 week and then fully formula fed - she's 9 weeks now. Shw taks a full 8 oz 4 - 5 times a day and at th end of a bottle sometimes wants more. She weighs 11lb 14 now - she sleeps for about 10 hours at night. My HV said she doesn't think we'd get to 6 months before weaning her. I was wondering whether 2nd milk for hungier babies would satisfy her or if it is just a gimmick??