Well done!
I have a profitable sidebusiness and so I feel I can relate.
You have proven a need for your product and you've done it the best way you can. You built it for yourself and it turns out other people like it too.
If your growth trajectory continues you can be doing 6 figures in a couple of years. If you have the patience and can support yourself I would recommend you do that.
Now here comes the tricky part.
To grow your company into those 6 figures and beyond, you probably now have to stop building for yourself and start building it for other people too.
But good luck it's great to see others out there doing things from scratch.