My baby is 3 months old and, despite being born at an average 8lb 5oz, is now on the 98th percentile and always looks so chubby when next to babies of similar ages. My HV says that exclusively breastfed babies can't be overweight and I should continue to feed him on demand. He does love feeding and sometimes I think I should try and space it out a bit but don't want to ignore him if he's hungry. What do you think?