I've always had crooked teeth

Last night I switched to my second tray, having used the first one for 20 days.
I had to extend from 15 to 20 days on each of the first 3 trays due to postponing my appoint with the dentist to have the buttons put in.
This second aligners didn't hurt or cause as much discomfort as the first set.

So it's been exactly 10 days since I started my Invisalign treatment and I am still on my first tray.
My teeth stopped hurting, and I can more easily bite and chew foods.
Getting used to taking them off before meals.
I used to drinks lots of tea throughout the day but now I don't anymore, as I really like to enjoy drinking my tea and not just chug it (since I have to mind the time I have the aligners on).
My lips are dryer and I am more thirsty than usual.
I've been using the TrayMinder app to set up reminders to change aligner sets and to keep track of how long my aligners are out each day.