@Timesnearlyup I'm so sorry. If it's any help, my DH had about 48 hours from going into the incoherent/sleepy stage and he then passed in the 5 minute gap between his daughter leaving and the day staff coming on duty. Everyone's different of course but I'm sure it won't go on for ever. Though it's been such a long time for you I can see how it might feel like it.
I have a couple of thoughts for you.
If your hospice has a family support team, ask for one of them to contact you urgently and let them know exactly how you feel. You need help for you, not just for your DH, and that's what they're there for.
Both my DH and my father passed within 24 hours of being reassured that we'd be OK without them and if they were tired it would be OK to let go now. Make of that what you will but I understand it's not uncommon.
Finally I'd try not to stress too much about doing the right thing. Clearly there is no obvious single right thing, or you wouldn't be getting all this conflicting advice. The reality may be that there's nothing you can do that will make a difference to the final outcome so doing the best you can, with love, is perfect.
He's lucky to have you and I'm sure he'd tell you that if he could.