Advice on insurance - cracked iPhone back glass

The back glass of my leased iPhone 15 Pro is shattered. I had a case (Spec bought from ATT) on but it didn’t do much… anyway I do have insurance.

-Should I go ahead and replace it now? I’m assuming I will have to pay a deductible. Would this start the clock over for my upgrade eligibility?

-Should I wait until it’s time to upgrade? Would I still have to pay the deductible or a fee for phone being broken?

-Not sure the best way to go about this. Any help is appreciated. TIA!