How long do aligners last?

I am about 6 weeks until I’m done with my Angel aligners. Usually I swap them out once a week. My next and maybe final appointment with the orthodontist is a week after my last aligner.

The concern is I never wore my aligner more than a week. When I mentioned this to the receptionist she talked to them and they said it would be ok. Have you worn them more than a week?

I am pretty strict about cleaning them. Using an ultrasonic cleaner and tabs. Do you think I should talk to them again or it will be ok? I just don’t want them to fog up. Thanks