GranLou, when my son was older than yours he changed school and started bed wetting again. I solved it for both of us by putting a plastic sheet across his bed over the bed sheet and then putting another sheet on top. Clean pyjamas on the floor. When he wet the bed and woke up wet feeling very uncomfortable he just pulled the top sheet off his bed, put on the dry pyjamas and went back to sleep. No fuss, I just picked up and washed the damp pyjamas in the morning. He stopped feeling bad about it, I had a full night's sleep and I don't remember how long it went on but obviously not that long.