We've just got back from out of hours gp. 11month old has a chest infection so they've given him antibiotics. He is really struggling to breathe lying down. I've tried to prop the mattress up but he's restless so wriggling about. He's currently in the pushchair so he can at least breathe more easily but I don't want to leave him in it overnight. Any suggestions for sleeping more upright would be very much appreciated!