The loss of appetite is nearly a universal experience.
Nutrition and hydration is very important for recovery. I don’t have anything scientific to back this up but I think our brains are in overdrive, consuming immense energy, keeping us awake and tensing up our bodies. We need to fuel our body simply to have the energy to get ourselves back under some form of control.
Consider these ideas:
Start the day with a large glass of water. Regularly rehydrate. No pissing -> not enough water.
Schedule times to eat. Set a timer on your phone and eat when it goes off irrespective of appetite.
If you don’t have an appetite then grab fruits, have a banana or apple or power bar ready. Just know beforehand that you re going to finish that snack.
Look into nutritional supplements, sport-shakes, protein-shakes…
Take time out to cook meals at home.
Try microwave or take-aways.
Healthy is better, but frankly I would be OK with you downing cheeseburgers and milkshakes. Main thing is to power up. Doesn’t even have to taste good – just get it down your throat.
Stay away from caffeinated drinks after late-afternoon, stay off booze.
Take time to have a long walk or start jogging. It’s so monotonous that eventually your brain sort-of turns off and surprisingly that’s maybe when you do your best logical thinking. Maybe because it turns off what’s been consuming you.
"If, therefore, any be unhappy, let him remember that he is unhappy by reason of himself alone." Epictetus