We must have spent £100s over the years on swimming lessons until covid, and now we are on a waiting list for lessons again. Ds1 who is 10 can do all strokes beautifully but ds2 who is 7 can only manage doggy paddle. He can keep himself afloat but has no technique whatsoever....I am a pretty strong swimmer and I am wondering if instead of going back to formal lessons I could try and teach him the proper strokes myself....has anyone done this??