@ente hope you can find some sleep! here some unsolicited suggestions for your brain health during $(current_times):

also when outside or when you have a break and you are not too tired, just sit for ten minutes with your eyes shut. don't think of anything, push all thoughts away. think of each body part and relax it, think of your breathing and try to breath in deeply through your stomach.

start doing something new in the breaks you have. if you don't know what, try reading and listening to audio books.

get the following supplements and take them daily: Alpha-GPC, zinc, a multivitamin with C/B12/D3/K3. avoid Ginko Biloba, avoid too much cofe.