I'm sure your focus on Aldosterone is right but like all this stuff is only part of the things we need to look at. Controlling the aldosterone is helping with vasodilation but it won't help with ATP production as it is part of processes that relies on ATP expenditure.
Whilst this animation doesn't talk to aldosterone it's saves a thousand words if you look at it for a moment.http://highered.mcgraw-hill.com/sites/0 ... works.html
What I think you need to add is a higher input from ATP. The ATP donates a molecule of phosphate to drive the sodium potassium pump and that won't be working properly if ATP is lacking hence you are sleepy.
I'm assuming you are not on blood thinners otherwise seek some advice before trying what I'm just about to propose. Before going to bed take 300 -450 mg of a good brand of coenzyeme Q10. You will need to pay up as the cheap brands unfortunately are just rubbish.
The coenzyeme Q10 will boost the production of ATP so the sodium potassium pump should work a lot better.
My thinking on why ATP is down is the enzyeme glyceraldehyde-3-phosphate dehydrogenase does not work and it is neccesary in the production of ATP. Fortunately we can get around it with coenzyeme Q10 provided the dose is large enough.
As I said earlier, don't do it if you are on blood thinners without real medical advice as the Q10 will elevate the effect of that form of medication.
I take 450mg of coenzyeme Q10 before bed each night. I wake bright eyed at 5.15am and go till 10pm having worked a full day. I still wake early on weekends as I am too full of energy. It's not the only thing I do but I would be very interested to see what you find happens if aldosterone is regulated and ATP is boosted.