You should enter the total and not hourly, but make sure it is not the total overtime altogether, just the overtime premium. In other words, only the "half" pay from time-and-a-half is deductible, and also only overtime required by the Fair Labor Standards Act is deductible.
There is also an income phaseout (this starts at $150,000 for single filers and $300,000 for married filing jointly).
Here is an article you may find helpful: No Tax on Overtime Explained: Qualified Overtime Deduction Rules for 2025
