Bryan I'm really happy for you truly! I was just reading through your earlier messages, and your experience sounds exactly like my partners (he's the one who suffers from these).
20 years ongoing, usually cycles last 6-10 weeks, and was meant to land about August-September. They get as bad as they can get: Kip 10+, throwing Imitrex and every drug possible at it to not much effect. He also started the D3 regimen 6 months ago like you so it'll be really interesting to see what happens as he just started having shadows in August. Please do keep us posted.. honestly after 20 years if this works or even lessens the cycle / severity, this would be life changing thank you to Batch! Stay safe and don't give up, cheering your progress on from here!