Stefanie,
I am perhaps the last person to give advice on this topic.
Disclosure; in the last 4 years I have picked up my Distillate maybe a half dozen times... life has gotten in the way. There are many reasons, some good, some just excuses... I digress.
Maybe try (as others have inferred) tweaking your tone a bit, add treble when you normally are keeping it smooth or throw a different style of strings on. If you normally play round wounds switch to flats or visa versa. Try playing the songs a little bit different without going off the rails... add a note here or there, or REALLY mix it up by adding space. Maybe start working with your drummer and find places in songs where you can do some fun little synchronized,
ba, bah, babaaas that don’t disrupt the song(s) but adds some excitement to them.
With all due respect I contradict Edwin’s comment. If you don’t feel like practicing but force yourself to practice, you
could be inviting more frustration into your craft. (Ask me how I know

)
Go see some other live performances and watch them with the knowledge that many of them are faced with a similar “stuck playing the same list time after time” and see if you can tell what they do to not feel as if they are in a rut.
Keep us updated on how things go.
Paul (who should probably unplug his Distillate’s battery before it oozes goo in the control cavity)