You need to determine the amount of applicable credit used for prior gifts.
See https://www.irs.gov/instructions/i709#en_US_2022_publink16784xd0e2475
There are examples but they are not all that helpful.
Frankly, you should use software for your scenario but TurboTax does not support Form 709.
However, if you put the following search term in Google, you should see a site in the first three returns that will direct you to a company that offers Form 709 preparation software at a pretty reasonable price.
U.S. gift tax software
@GZ49
