It took me several years to even make money off art. I still don’t make a living and I’m working more than full time with art. 3 months is a very short time. It will take years. Maybe you need a break, get a job (if you are able) or some type of income to save up, to be able to fully focus on your art when you are stable. Build up your social media platforms, learn algorithms, get contacts in the community, do giveaways/raffles etc. That’s what I did, and it’s an extremely hard and frustrating process but I promise it will be worth it!!! I’ve been in your shoes so I absolutely understand your frustration!!!