Is it possible to apply for a Digital Work Visa (DTV) in Thailand while being a freelance English tutor online?

I've been in Thailand for 11 months on both the tourist stamp and education Visa. I'll be returning to the USA next month for about 2 months, then back to Thailand. I'll be coming in on a 30 day stamp but will be going for another education Visa, this time for Muay Thai (previously it was for language). I planned to stay in Thailand until December, then return to the USA and apply for the DTV.

I started working as a freelance English tutor on Preply about a month ago. This makes me a contractor I believe. I planned to continue this for the next 9 months, and hoped to use this as my activity when I apply for the DTV in December. I currently have no Thai students and will turn away any that try to book.

Is this a viable route for the DTV? I was thinking to clearly state on my Preply profile that I cannot teach Thai students, and make sure to highlight this in my application.

Thanks for any tips or advice!