DS (5 months tommorrow) has just learnt to roll from back to tummy (yay!) He has always struggled with tummy time and still isn't putting his arms straight to push his upper body up when on his tummy, if that makes sense.
My question is, is it usual for babies this age to have their legs in a froggy position on their tummy? He pushes them right up repeatedly, eager to move I think.
I've been wondering since he was tiny about his muscle tone.