Hi
@Alan-58 do you use a libre or other cgm? I would be very interested to know what is going on at night with those readings.
While dawn phenomena is one of those things that so many of us (me included) have to deal with, some people also go low at night and then have a morning rebound
Learn about one of the possible causes of high morning blood sugar in people with diabetes.
I inject a correction dose when I wake to counteract the dawn phenomena, but I would recommend you talk to your clinic. With readings up to 15 they might think it makes you eligible for an insulin pump. (They did for me, though I didn't accept at that time, and as I am in New Zealand I don't know if UK clinics have the same criteria.) And even if they don't offer you a pump, it may be that a different insulin regime (basal) might help?