Teeth only move when they're under constant pressure; thus, you'll need to wear your Invisalign retainers as required by treatment. The time you'll need to wear your retainer can vary throughout your treatment, so pay attention to what

Teeth only move when under constant pressure, so you'll need to get used to wearing your Invisalign often. Your treatment plan will specify how many hours each day you should be wearing your Invisalign. This time amount can fluctuate throughout treatment based on what movement is needed. Once your treatment is over, you'll need to wear retainers regularly to retain the progress made.

Chewing with your Invisalign retainers is not the best plan. Invisalign aligners are not strong enough to eat with, so they may break and not work as intended. You'll need to remove them before eating and then brush your teeth before putting them back in.