Hi Nick
I understand you want to know what has caused this sudden change in how insulin behaves for you, but you may never get a real answer. There are lots of things that might cause changes, body weight is one as is a change in insulin resistance, both of those fluctuate as we get older sadly 🙂 as do hormone levels. Insulin is a hormone and interacts with all the other hormones in the body in complex ways so a change in other hormone levels could have an impact. People tend to assume it's just us gals who have hormones shooting around the place but the same is true of chaps, it's just not as obvious. There are other things too that impact how insulin behaves, including but not limited to the amount of exercise you take, how much muscle mass you have, how quickly your digestive system digests food. When you look at all those factors it's hardly surprising there are changes in requirements. If you're worried that there might be something wrong and that's why your insulin requirements have changed speak to your doctor about it, they should be able to reassure you.
It must be difficult if you've been doing the same thing for 20+ years and then suddenly you find it isn't working, but if I were you I'd concentrate on trying to establish the right dose of basal insulin and then working out what to inject with food will be easier. As Trophywench said it might be a good moment to revisit your team and perhaps a DAFNE course or something similar, having support whilst trying to work out how to adjust your insulin regime will be really crucial I think. For what it's worth it looks very much to me like your basal insulin dose may be much too high, and essentially you're just topping up with rapid when you need to take the edge off. This is quite similar to how mixed insulin works really but with a little bit more control. The current advice with two insulins is that the basal (Tresiba) should just be used to cover your basic functions like moving and breathing (keeping you ticking over) and then rapid should cover your food intake. Very few of us without a pump get that absolutely spot on, but the closer you get to that aim the more control you have. If you weren't taught to carb count then a course or time with a dietician will be invaluable for that because you need to work out how much insulin you need for a specific amount of carb which can be a bit mind boggling at first. If you have been taught to carb count and are good with all of that then some basal testing would be a really good idea.
How often do you see your team? Again as the very wise Trophywench mentioned, people tend to assume that if you've been at it for 20+ years you know everything there is to know about diabetes which might not be useful at this stage. You might want to have a chat with them about more close contact, and ask them to assume you're a newbie for a little while just so you can identify if there are areas you've missed. The positive in all that is that once you've finished you'll have the skills and experience to adjust again should your requirements change in the future 🙂
Evening KookyCat
Thanks for your input to my questions and yeah, I do believe that the only thing maybe is the basal levels but one thing which tells me different, is that if I inject 1 unit less than 23 the norm of Tresiba, then I wake at 4:00 to urinate with a high blood sugar reading of 14-16 and if I take I unit more than 23 I have a low blood sugar of 2.4 at 7:00?! This is where the suggestion of taking Tresiba in the morning may help me.
The team are trying to help me at present but have come back telling me, all is really good with my blood tests taken 1 week ago and now they are suggesting I go and see them, where they are testing my bloods at 9:00 then again at 11:00. I am not sure what they are seeking but in 4/5 weeks time, I will be undergoing these tests.
I have always been a carb counter, my body weight has remained unchanged at 74kg with a height of 1.760m, my digestive system works very quick as I could eat anything and just go straight into a game of football, long cycle ride or run a lengthy distance. I am an active guy who has muscles where there are required for an active guy (that's not a guy who goes to a gym).
I suppose at the end of the day, I'm a guy who likes hearing, having and knowing answers, to quick.