I usually dose sleep related products which contain mucuna pruriens 30 minutes or less before bed as the stuff increases dopamine, which if you have too much in your system can make sleeping difficult.
Can you get to sleep without youth hgh? If so, you may want to try dosing it closer to bedtime to reduce the likelihood that you'll have too much dopamine in your system before sleep or during the early 'lighter' stages.
As for your poor sleep in general I'm an insomniac, at 21 lol, can't sleep without particular meds. If I'm spending the night at a friend or a girl's house and I've forgotten my sleeping meds I'll be awake all night.
A few years ago I was on ambien and tried two other sleeping meds, all of which stopped working after a while. In September 2016 I was put on 'phenergan' (aka promethazine) and it's worked ever since. Research it if you will, I think it'd be worth a try though. The human body doesn't become dependent upon it, nor does it acclimatise to it. Doctors also have no reasons to think that long-term use will have side-effects, though thus far no studies have proved the opposite. I'm on it and I feel fine a year and a half in. Nothing's changed. It leaves you a little groggy in the morning but after 20 minutes that dissipates.
For a while last year I was depressed, my sleep became even worse and I was put on 'quertiapine'. If you decide to try phenergan and it stops working, you could try stacking 'quertiapine' on top.
If your sleep worsens whilst on low carbs, supplementing with some tryptophan helps. You body uses tryptophan to make serotonin, which is then made into melatonin. The boost in serotonin supplementation provides can replace the serotonin dip resulting from consuming fewer carbs
Hope this helps bro