Could it be said that my 8 month old DD is slightly under what weight most babies her age are because she is very active and probably more active than most babies that age. She's only ever really still when sleeping and she'll pretty much be walking in the next month as she's been trying to stand unaided as her next thing. She still has up to 8 7oz bottles a day and up to 3 in the night it varies. She's not too fond of her purées but loves solids as she's got 5 teeth already so pretty much skipping the purées stage. She knows what food is and can feed herself so that's not an issue.