So I’ve had a similar issue. Basically sounds like you’re overdoing it and probably been for a few weeks if even easy climbs and workouts can’t be finished.
I work night shifts as well and some can be insanely busy. I learned the hard way that my training volumes can only be so much. At the very high end I can do total of 12 hours of training a week (climbing and running) and sometimes my cycles will be 2 weeks of training then a week of rest.
I think with varying shift work I am limited to this training volume and do not have the luxury of doing more volume without running the risk of “bonking” and being very fatigued at work, which is not good for patients or fair to coworkers.
My advice. Dial it back and take studious notes about your sleep, what your shifts were like (busy, stressful, etc?). This way you can establish a maintainable training volume.