Growing out a henna mistake; I chopped most of it off back to chin. I hate it. I ruined almost a year and a half of virgin growth.

I'm trying two months of onion juice/cold brew coffee scalp treatments, every third night I massage it in and sleep on it then wash in the morning, to get more than half an inch a month.

Bad news: I REEK. Coffee and onion juice is a horrific smell. Good news: Its been two weeks and I have a TON of fuzzies, all over my head. No shed, this is new growth. It's exploded.
I've never gotten this with just caffeine rinses before. Anyone have any experience with this?