Baby is 13 weeks and feel awful haven’t noticed that he’s stopped lifting his arms up the last week. He’s no longer batting and teaching for his play gym and mobile, had assumed he was just getting bored. Will still bring hands to mouth and hold things if our in hands and moves arms out to the side but won’t reach for toys. Do I contact the health visitor today or wait 3 weeks? He was previously not moving his head to one side and she mentioned physio but that resolved