It sounds like you have established a residence in Ohio and have moved out of CO. If that's the case, then you'll file two part-year returns for the year you moved, one for each state.
Ohio taxes part-year residents like this: Ohio tax is computed on your total income for the year, and then the tax is multiplied by a percentage based on your non-Ohio income compared to your Ohio income. The income you earned before you moved to Ohio is your non-Ohio income. The income you earned after you became a resident of Ohio is your Ohio income, even if the clients lived in Colorado.
For Colorado, you will report your income from before you moved on a part-year return.
Note this CO rule that appears to apply to you: "Business income from the performance of purely personal services is Colorado source income if the person performing the service was physically present in Colorado at the time" (https://tax.colorado.gov/income-tax-topics-part-year-residents-nonresidents). It sounds like you're not physically present in Colorado when you're doing the work now, so you would not have to report any CO income in future years.
As a resident of Ohio, all your income is subject to taxation ("An Ohio resident is subject to Ohio's individual income tax on all of their income.").
TurboTax should walk you through the right questions for these scenarios.
We also have some help articles on how to file peart-year returns: https://ttlc.intuit.com/turbotax-support/en-us/help-article/printers-printing/file-part-year-state-r...
