That would a) let them off the hook ("How can we help him if he's lying/not telling us the whole truth?"), and b) put me in the wrong ("He's lying/not telling us the whole truth.")I think after all this pushback I would be inclined to simply stop telling them I use it 3 times a day. Not the way it should be, and a missed opportunity for them to learn something, but also not worth your energy.
Instead, I now have a secret weapon: Plank et al, 2005 !! (I'm laughing out loud, but I'm actually being serious.) "Sure, dear Endo, I'm happy to take levemir only twice a day, as you wish. Just let me know what I'm supposed to do for basal coverage for the other 12.8 hours each day."
The most difficult part of this for me is that I have spent years believing that I should be able to make 2 injections last 24 hours (because that's what I've been told / that's what the official documentation says.) I have repeatedly watched my blood glucose creep up to 20 mmol/L, fully aware that I'm now poisoning myself, yet helpless because I've been repeatedly told that my levemir "is working" (cf. Martin Seligman's "Learned Helplessness").
Discovering "Plank et al." feels like a weight off my shoulders.