It's the worst catch 22 of my life. I love the person I become on coffee, I hate the sleep deprivation that comes with it.I'm like you. I tolerate caffeine well and it makes me feel good, but my body simply does not have what it takes to metabolize caffeine fast enough for it not to disrupt my sleep quality, no matter how early in the day I ingest it. Just a few days of consecutive use will impact my wellbeing. From what I understand, the problem exists on a genetic rather than metabolic level and has to do with with the amounts and types of enzymes your liver has been equipped to produce. Would be fantastic if there was some substance you could take that caused all circulating caffeine to be excreted.
I tried B vitamins with it, it doesn't help, it just accelerates phase I detox when our issues is most likely with phase II.