My son is 2 weeks old today. We have been exclusively breastfeeding however I returned to work yesterday and I just can't leave enough milk for him. I was only gone for 3 hours yesterday and he drank all 5 or 6oz of milk I left. If I pump after nursing I only get anywhere from 1-3 oz, and if I pump in place of nursing I can get 4-6 oz but that's hard to do when he's eating every 1-2 hours. I don't want to do it but we've decided to supplement with formula. Does anyone know any good brands of formula? And also is Enfamil a good brand? I got some full size samples of it in the mail so that's what I'll use until we get more.