Thank you for this . I ' m new here . My son was 6 weeks old yesterday . He was 7 lbs 10 at birth then dropped to 6 lbs 11 within the first 9 days . I was really determined to breastfeed from the beginning but was told on day 3 to supplement with formula . Then told to stop on day 5 . Then told on day 9 that we should exclusively formula feed if I continued to not feed him enough . I was devastated , and none of the midwives seemed to believe me that he basically fed all day . I was also told to wear a nipple shield from the beginning and then scolded for using it , then told to keep going with it because my breasts are anatomically incorrectly shaped . At 3 weeks my mum told me to relax , ignore all the differing advice and complicated charts the midwives gave me and just feed him . From that point he has gained roughly a lb a week . I really wish I had had the courage and knowledge to trust that we would figure it out naturally to begin with because it would have saved a lot of upset . My son is still taking 1 small amount of formula in the evening with his Dad . But we are OK with this . It has become their thing which everyone enjoys so I ' m not going to let it bother me .