Really sorry to hear about your situation. I have not been in a similar situation physically, only mentally. I hope you recover well.
Besides all the good points already mentioned I personally would not continue on the bike for a while. Get your blood checked up, rest completely for as long as needed and start back up with something new. Hit the gym, run, or pick up some activity that’s fun and exciting. Be patient and when you feel like it’s time to smash the pedals force a bit more rest on yourself. Start back up ultra slow and don’t jump right back into structured training.
The reason you are burned out is probably because your incredibly dedicated to what you do, cycling among other things. This is what eventually will get you right back on top again but next time with more experience to balance and prevent a future burnout. You will come back a stronger version of yourself, so just be patient.