Startup cost written off

Hi,

 

I have a startup in 2022, and the total startup cost in 2022 was $8000. The amount can be deducted in 2022 was limited to $5000.  When I filed 2022 tax, it says the amount of $3000 to be written off over 15 years.  How do I file the deduction of $3000 for 2023 tax return?  Thank you.