Anyone know why im i experiencing “nova” cycles with my energy levels?

Currently my main focus is martial arts mainly kickboxing with a bit of other stuff about 2-3 hours on a good week, my secondary is weight lifting doing progressive overload and my third is badminton i just can’t seem to give this up no matter what, and i usually relax with yoga or swimming in a week.

My work is fairly active as im on my feet most of the day easily 10k steps average sometimes spiking to 18~20k steps on a busy day.

The problem is recently im having massive oscillating energy levels - i’d feel absolutely energised one week where im doing 6~7 hours intense exercises, completing my routine and tons of additional steps in walking, burning 3k+ calories per day, but then the next week or even two weeks i completely crash no matter how much i try to recover or rest.

Motivation just drop to absolute 0 for a while that i barely keep up with work, and then it bounce back up explosively for another week….rinse and repeat.

Im trying to break this cycle at the moment so i can consistently stick to my weekly routine without crash. Can anyone help me?