IUI question!

I did several in 2018 to get pregnant with my son, but I can’t remember about the abstinence part...I’ve been on my period so it’s been about a week since hubby ejaculated. I’ve read it’s supposed to be no more than 5 days...our <a href="https://glowing.com/glow-fertility-program">IUI</a> is tomorrow. Should we tonight or hold off?!! It says to stay abstinent for 2-3 days but not more than 5 😩