He goes absolutely ballistic screaming and fighting, and (as he is incredibly strong) I can barely hold him still, we end up having to have several goes as he wriggles the mask away from his face. Have tried the "look, teddy/bunny/mummy etc is having her medicine, now your turn" thing, plus tried giving him the inhalers and the mask to play with so he knows they're nothing scary. Any tips for a) how to physically restrain him and hold the mask, b) how to help him be less scared of the mask/inhalers? TIA.