Should i be overly worried?
DS3 is one in January and shows very little interest in sitting up. He can do it, for a few mins, but when i try and sit him up he arches right back and seems to prefer to be able to roll about on his front or back. He can weight bear on his legs, but not for long.
He's due his one year check the day before his first birthday - i'll obviously mention it then, but i'm not sure how worried about this i should be?