Just want to point out that supraphysiological dosages of androgens, which most of us are enjoying, can also wreck sleep. The 19-nor's get a lot of flack for insomnia / sleep disturbance, but any / all androgens can do it. Some of those androgens (tren in particular) can also futz with fasting glucose. Some guys who wear CGM's have linked their nighttime wakings with hypoglycemia. In terms of GH, you'd expect hyperglycemia if anything, but it's possible that the GH can transiently cause an increase in blood glucose which the body then counteracts with insulin release, thus resulting in the hypo that wakes people up. What's curious to me is that the same folks who report this link between waking and going hypo don't wake up in the middle of the night craving orange juice / carbs. So i'm really not sure...
That being said, there are some people who 100% notice that changing their GH from PM to AM fixes their sleep complaints. The most important thing is to just do what works best for you, and stick to one shot per day to prevent accrual of insulin resistance. If it's the CTS that's waking you up, that should subside in due time. Mine took several weeks to go away even on a doc prescribed HRT dosage of GH (1.8 iu). Once I started my own dosing up to 4 and then 5 iu the CTS only came back very briefly when making the dose changes.
I have not seen too many guys who run high dosages of GH (say 6 - 10 iu) taking it in the AM. I'm sure they exist, but it seems that 4 iu or less in the AM is workable but 6+ might be too sedating for most users, and so they stick to injections at bedtime. I listen to a lot of pods and interviews of pro's / competitors / coaches and the vast majority are taking their GH in single bolus pre-bed. One exception, Evan Centopanni recently said when he competed he took his GH in the morning.