I have hypothyroid and I'm in perimenopause, so I understand how hard it is to keep your energy up.
I do most workouts low impact, but I try to keep the intensity up when I can. I enjoy the higher intensity because it does give me that surge of endorphins. Also, I figure it must be good for my metabolism to do metabolic workouts and weight training
. I may be wrong about that, but it makes sense to me. My doctor has never told me to work out less. I do try to be aware if I'm eating for good energy and if I'm getting enough sleep at night. I'm not afraid to go to bed early
Being in perimenopause, I also want to work out to keep my bones strong and to help me sleep better (I have a sedentary job).
However, if I'm doing a high intensity workout (like hiit), I do prefer to keep it shorter - 30 minutes or so. And I only do official workouts 4 (sometimes 5) days a week and I just walk on the other days. If I feel I need an easier day, I listen to my body and I do something less intense.
I like how working out makes me feel so I just keep pushing myself to do something and remind myself that I almost never regret a workout after I'm done.
It's probably best to listen to your body, but also keep fighting for good health.