Draw a line in the sand, and commit to making changes, and it is actually quite easy, but do it in smaller manageable steps. A few things you need to work out/confirm are: Basal dose, I:C ratio and your correction factor. Start by doing a basal check as if you don't sort the foundations, nothing else will be right. Then you can work out the other things. Consider buying one or 2 books: Think Like a Pancreas, or Sugar Surfing, as they both explain all these things in excellent detail. Not sure how often you test, but if you can't afford a CGM/Flash GM (I definitely recommend you try to!), commit to doing a week or so of comprehensive blood tests, so you can start to see the patterns.