Me on the other hand, burned out really bad at work and got a stress induced fatigue syndrome (do not know if the term is correct for US/UK). I’ve had the fatigue for almost 3 years now with fatigue, headaches, being stress sensitive, sensitive to light and noises, emotionally numb, depressive, difficulty to remember stuff as well as a generally low level of psychic endurance. I got better over time and has been working part-time for a while. I will hopefully be back at work full-time this autumn. The symptoms are still there but can be controlled most of the time.
I just wanted you to know that you are not alone, and there are others (like me) who suffer from this syndrome. In the US, it is called CFS (Chronic Fatigue Syndrome) and is often accompanied wth Fibromyalgia. It took many years before a lot of doctors in the US accepted, or believed, it was a "real" physical condition. Uninformed people can be extremely judgmental of those who suffer from either or both conditions.
Your W appears to be judgmental and uneducated about chronic fatigue. Some people are so severely affected they cannot hold down a full time job, participate in activities with their children, and miss some of the most important events in the family. Having a spouse who does not have empathy, causes more stress. My concern is that your W has a lot of resentment and coldness in her heart. If she sees you not measuring up to her expectations in a working man.........she will have little respect for you. At this point, your objective is not to appease your W.
There is nothing you can do to change your W. However, I think it was wrong what her lawyer did........and you should be represented by your own lawyer, or she will continue to take advantage of you. She went at you with her unreasonable terms (especially about the child) and you accepted it? I don't understand. Anyway, your priority has to be your health and your rights as the child's father. But, I don't know the laws where you live.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!