The water babies class at my local pool runs on three mornings a week at 10.20am. DS, 7mo, is in a nice routine of napping around 10-10.30am each morning. It's the only nap I can guarantee he will take and he is overtired as it is so I feel strongly about him getting it. I don't want to take him when he is tired and grumpy either. He gets up around 8am. What would you do?