What if I don’t finish the Fractures: Tenrai event in time?

With the way the progression is at the minute I’m concerned about wether I’ll be able to finish the current Fractures: Tenrai event in time to get the yokai helmet which i’ve wanted for a while since I first saw it due to the current progression, yada yada. After the 5 days are over, will I ever be able to get the rewards again for free?

what ever progress you make this week it carries over the next time it shows up which is in January so dont worry