Epithalon and sleep quality: 4 weeks in

I started a 4-week cycle of Epithalon (100mcg daily) last month to address chronic insomnia and general longevity goals. I'm currently at the end of week 4 and the results have been pretty remarkable. Before starting, my Oura ring showed my deep sleep was consistently under 45 minutes. As of this morning, I'm averaging 1 hour and 15 minutes of deep sleep, and my HRV has improved from 35ms to 52ms. I feel significantly more rested, though I did notice some vivid dreams in the first week. Has anyone else experienced this kind of shift in sleep architecture? I'm planning to cycle off for a month now, but I'm curious if others have found a 'sweet spot' for maintenance dosing after the initial loading phase.