@mercked , I would bet money that the 2,000mcg of methyl-B12 is the main culprit here. Since this happened to me, I have noticed these severe sleep issues (waking after 1.5 hours) almost always correlate with a member taking a methyl donor.
It was also almost 4 months before I began improving and had many of those windows of a few nights of 6-7 hours sleep. It’s been almost a year for me, and while I’m not totally over it, I can get at least 4 hours sleep in a row and 6 total. Much better than August last year.
Look forward to being in this for the long-haul, but it should get better.