Definitely make your health a priority. When I left the military I became very sedentary over that following year while going to college and I also saw my health decline pretty rapidly.

I started showing signs of having diabetes (sweet smelling urine) so I bought a blood glucose tester, changed my diet a bit, and started getting more active again. Thankfully I haven't had any issues since.

Glad to hear you are adjusting your exercise routine and doing your best to get adequate rest each night. That should help quite a bit.