Can I do an estimate for 2023 tax year to see if I need to make any changes?

[NCperson]

yes, use the IRS calculator:

https://www.irs.gov/individuals/tax-withholding-estimator

[SteamTrain]

......and however you decide to do it....DO NOT mess with your actual "Online" TurboTax account until the 2023 software comes online in late Nov or December.

If you do any modification of your primary TTX Online tax file right now....it will irreversibly destroy your current 2022 tax file. 

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Only by suing the Desktop/download software can you create a separate tax file to "model" the next year's taxes in separately-created test files, or use the "What-If" worksheet that TTX has in the desktop software.