Do you think it's going up while I sleep as I'm going to bed too high?
Most nights
it doesn't go up at all (look at the week 13-19 April) - mostly flat 00.00 to 06.00 and the same on many other days.
You seem to get a massive rise from 8pm on many days, and depending on where you start, it results in a variety of end points. What it points to is that your evening meal has totally the wrong insulin:carb ratio as you go up and rarely come down from it. From 27th April to 8th May you see this every evening.
On some days you also see what appears to be dawn phenomenon, however this is not always happening.
On 9th May, you did something different and this result in a flatter entry into bedtime followed by what looks like dawn phenomenon.
As I said, in this case, I'd go back to basics and basal test first. Then review your I:C ratios. They may be different at different times of the day, but you need to systematically approach checking them.