Agreed with the PP, we never fed every 3 hours to start (with solids anyway). It was just normal mealtimes when we would eat. We started one meal a day (lunch) at 6 months and were at 3 meals a day at 7.5 months, plus milk probably 5 times a day. It's probably been since 12 months that we also do snacks. Now at 15 months, my daughter often has 3 meals a day and 1-2 snacks and just a cup of milk at night (sometimes also in the afternoon with her snack). I think for most babies, they start eating enough to understand that food satiates hunger somewhere around 8-10 months, which is when they might want a snack, but you're still feeding them probably every 3 hours if not more with meals, snacks, milk, etc. I think they pretty much keep that up until school age when they probably don't have the chance to snack as much.