Hey how's it going !
I admire that you've been able to build an in person workshop--this actually makes your position a whole lot easier than someone starting from scratch and not even having a product/market fit!
I also know how difficult it is in the beginning to transition your service into a scalable productized service.
First, check out the podcast Tropical MBA who really helped me in growing my online productized service business. You'll get tons of free advice and case studies there!
Secondly, I advise you build and self publish your own content rather than use Thinkific/Teachable/Udemy/ the like.
Not only will you own everything, you'll be able to set your course at whatever price you want and on top of it take home the full cut -- these platforms, especially Udemy, take hefty fees and can set pricing caps (I learned this the hard way).
I'd love to brainstorm with you and give actionable advice that you can use to cement your online course on the stage among the many others (including my own) that run profitably.
I can tell you have a strong intention and passion behind what you're doing, so that should make it easy for us both to make progress.
Feel free to shoot me a message !