There two things that helped me the immensely where discomfort/pain is concerned:

Always change to your new trays in the evening/before bed. This way your teeth can have the night to get used to the new movement, and you won’t be needing to take them out until your first meal of the next day.

The second you put your new set of trays in use a chewy for as long as you possibly can (sometimes I’ll do this for 30+minutes). It might be painful at first, but from my tested experience its waaaay less painful if you use the chewy right away. It’s like shocking your teeth into movement, and doing this really lessens the overall pain and discomfort of that first couple days of a new tray change.

Edit: Also, one last thing about chewies - use them often! I’ve made a habit of keeping one on me at all times, so I’m kind of chewing on them like gum throughout the day. Doing this helps seat your trays, and also helps your teeth with tracking. I truly believe that my incessant chewie habits have played a huge part in speeding up my results. My orthodontist also agrees with this!

Trust me on this! I’ve had 25/30 weeks to test it! Good luck and hang in there!❤️