Ds 7 has moved up in his swimming lessons- he's never particularly loved them but loves swimming. The last few times he hasn't wanted to go or has cried before lesson. He says he just doesn't like it- familiar teaches and I watch so not worried about anything like that, I think it's just that's its hard and cold. He can swim a width no stopping. I don't know whether to force the lessons or stop for a while and we take him instead. Advice?