How long have you been practicing? If you are a big law attorney, rather than working a side hustle, I would focus on maximizing your annual bonus. That will be the most efficient use of your time. Most side hustles are going to pay a pittance in comparison -- and you're S-H income will still get taxed at the same high rate, which doesn't make it worth your time.
Now, if you're looking for a hobby, and the end goal is not to make more money, that's a different story.