Turbotax is only intended for end-of-year tax reporting. It is not designed to track your income and expenses and determine estimated payments. For that you would need something like Quickbooks.
For a simple small business, there is a version of Quickbooks online for Self-employed that includes Turbotax when it is time to file your return, it is a monthly subscription.
https://quickbooks.intuit.com/self-employed/
