How long did it take you to get to 90 people through YouTube videos?

I've been selling licenses[1] for less than 5 months, which is how long it took me to get to 50 active licenses

I've had GitHub sponsors enabled for about 2-3 years now I think, and I currently have 40 recurring sponsors

I've been making YouTube videos for about the same time and it took just over a year to get my channel monetized (1k subscribers + watch hours)

[1]: https://lgug2z.com/software/komorebi - there is a live active subscription counter here