Go & Grow by Similac Milk-Based Toddler Drink, Powder, 24 oz (Pack of 4)

I highly recommend Similac's Go & Grow Toddler Formula 12-24 Mos. It is a lifesaver for our 18 month old, who has been drinking the unflavored one since she was 14 months old. She started getting finicky around a year. We don't trust her eating patterns (not that her behavior is her fault, because it isn't), nor do we like to rely on cow's milk due to its low iron content, so we always supplement with this toddler formula. It is great.

My son just turned one. He plays with his food more than he eats it and gets distracted easily and wont continue to eat. So we like the Go & Grow, because I'm scared he isn't getting enough and I definitely don't want any deficiencies in his diet. One question I do have with this formula is how often they can actually drink it without it being over kill? What is the recommended amount a day for a child also toying with table food. We also do whole milk with meals, and juice cut with water as a wash down with food. I don't want to over saturate his diet with formula, but have it be more of a compliment to his diet. Any advice any one has would be nice.