Called 111 nearly 3 hours ago for advice about DS, they advised they wanted to send an ambulance (he had a rash and was very upset but also very sleepy). I felt it was a little ott at the time but agreed as they were concerned, but now the rash has disappeared, he calmed down and has just gone to sleep as usual. I don't want to waste anyone's time so I'm thinking I should cancel the ambulance but do I ring 111 back or call 999 to do this?