Growth spurts..I know they're bad, but...DS is 22 weeks and at the moment is having 3 meals a day (cereal with fruit, 3-4 cubes veg at lunch, 2-3 cubes fruit with rice at tea), a 7 oz bottle of formula at bedtime, and is BF every 1.5-2 hours for about half an hour. That includes from 1030pm on. Dont want to give any more formula, only doing that so I get a little break. Should I be giving him more food? This started a few days ago and I am so very tired...