If you don’t mind me chiming in, I’d like to second @Tubacabra 's advice. You really do need to build more of a following before considering a Patreon. Keep in mind that I’m a novel writer, so the following stats might not apply one-to-one for comics. As for a specific number of subscribers, there's no definitive number, but I’ve seen people usually recommend at least 500-1000 subs/followers (maybe less if you have high engagement and dedicated fans).
This is because you’ll usually expect a 1-3% conversion rate from subscribers to patrons, which is why you probably want to wait until you get more of a following. Suppose you have 100 subscribers, with that conversion rate you can only assume 1-3 people will become patrons. Also consider that people are more likely to join your patreon if they see you already have other patreons and are proven to deliver your tier rewards, which is another reason to wait until you build a larger following.
But honestly, once you start reaching hundreds of subscribers, I don’t see any harm in starting a Patreon and having that set up early on but definitely don’t expect any crazy numbers too soon. Hope this helped!
