Get your taxes done using TurboTax

I'm taking the option of spreading out my withdrawal over 3 years (resulting in a large refund, as opposed a very large amount owed).  My reasoning is because my income in 2021 most likely will be much lower than 2020.  Does Turbo Tax offer a way to "estimate" next years tax return?  Meaning, at some point this year, I'll get a better feeling for my income (I work in sales) and would like to do a "mock" 2021 return to determine how much I'll owe in taxes so I can potentially have my company withhold more tax (I assume that is an option).