My son has just turned 5 months, he normally feeds (formula, 5Oz) every 3 hours. He's been on hungry baby milk since he was about 2 months old. Lately he can't seem to make it the full 3 hours before wanting feeding again. He's already 19lbs! as he's a tall baby they've said he's going to follow the 75th centile and is following it nicely. I'm just wondering if I should start weaning with some pureed veg?