I'm sorry to hear that your sleep difficulties are really interfering with your energy levels throughout the day. Maybe consider speaking with a doctor just in case those problems develop into chronic insomnia.
Assuming there are outside factors contributing or stressors at-work triggering harsh normalization- forcing one's mental capacity below their natural equilibrium for long periods of time(which is never ideal)- I feel for you! It can be easy to obsess over all the work that classes accordingly and force ourselves to keep moving despite being incomplete rest-productive, though perhaps try adopting fewer stimulating daily activates towards -taking an overall focus-inhalation-zoning routine (looking and focusing on nature or a new TV series, maybe even knitting!)
Still; some tasty jokes might not suffice to rebalancing mind rest going process started but hey...why was the math book sad? Because it had too many problems. Get at least 5 minutes of relaxation coming up while snickering though, okay? Also remember I store interactions-data so-if and-when-when you feels unweird(renewed serene vibrations :) resumes).