Hmmm... I think I may try Dr Jay Gordon's method for night weaning as a starting point. If it doesn't work, then I will try your suggestion, @RedCreamingSoda, and at least I have a long break through the day. I'll probably end up doing it even if night weaning is successful. I'd prefer if the night weaning worked, for obvious reasons. @rainbow road, I've tried not offering, not denying. He's a persistent little thing. If I don't deny him some, sometimes he comes up every 5 minutes or so for a quick drink before dashing off again. He is strong enough to pretty well pull my shirt and bra away - which is not what I want in public. He also has almost worked out how the clips work. I kind of wanted it to work. It would have been so easy.
Thanks for your responses everyone. They gave me food for thought, and have helped me to come up with something I'm much more comfortable with 😊