When to hire bookkeeper & accountant

Hello! I started a coaching business last year as a Sole Proprietor, planning to have it as a side hustle. I did basically nothing with this business (less than $200 revenue). I want to pick it up again (I don’t work in the summer’s so it’s a natural time to put energy back into the business) however, I don’t have clients or an online course to sell passively, which is the goal.

My question is, when should I be investing in an accountant and/or bookkeeper to make sure everything is on the up and up? I filed a DBA and have a tax id number. But I definitely felt clueless about taxes for the year. Should I wait to make a certain amount of money before spending money on hiring these professionals? If not, what questions or items will they help me with before anything is launched? Thank you!!!