Ian gained 2 oz yesterday and is doing well in the eating category! He is congested though, which is a little disconcerting as it is RSV season (a respiratory virus that can be especially dangerous in little guys). I've been fortifying the breastmilk we feed him with a small amount of formula and I'm wondering if he is allergic to milk. Gabe was congested for a week after I used a milk-based formula with him. I've changed formulas, and I'm hoping the congestion disappears with the change.