My DS is 3 mths old and has been having a bottle of formula for his last feed for 6 weeks. Last week I introduced another formula feed in the morning. Over the past 2 days due to Christmas/New Year stress ie being cramped in other peoples houses and not being able to get the bangers out in public ( sorry just not me) he has had 2 further formula feeds a day. I have noticed that my baby is not as sick or as grouchy after a formula feed and tends to sleep better. However, now I am feeling guilty about not giving my child the best start and worried that I might have damanged my milk supply. I am still feeding once during the night and for 1 morning feed. Baby feeds well from both bottle and breast. What would you do ? Breast or Bottle or a bit of both.