Thank you to everyone for responding with their own unique advice, it is much appreciated, there were many great suggestions. Again, I will respond to everyone here to ensure organization. Forgive me if I do not address something.
Our sleep quality is poor, we do not feel like rest is actually rest.
I have learned that most of the health recommendations out there assume one has a certain baseline of health to work with; it is assumed stomach acid is strong enough to breakdown protein and absorb minerals, the gut can handle fibre, bile can be produced, the gut can produce vitamins on its own, the microbiome only needs to be "fed" (prebiotics + probiotics) and not entirely rejuvenated, etc. We do not have this baseline, and are taking supplements to assist with these functions. They do help a little, but it seems they should be doing much more. Our state seems to resemble that of people who are starving.
The liver can and does convert protein and fat to glucose. For many people, whole food carbohydrates, fibre, plant chemicals (oxalates, phytic acid, lectins), even prepared properly are a significant issue. We are some of those people, and junk food and non-organic food gives us new, debilitating symptoms. I would be happy to live on bread and water if I could.
We are keto because of problems from carbohydrates. Many issues have actually been resolved being keto/carnivore, but others have not. There are some people who can only, in truth, literally survive or do well eating this way. We have received the highest quality and most detailed testing, and it does show many issues that were mentioned by FarmerWife, but the programs recommended by these physicians do not work. Our main problem is our bodies simply do not break down and absorb food or supplements like most people (our testing showed this), and we have yet to be told why. God has to bless the food and remedies for them to work. Various saints had to be resigned to the fact that God willed them to suffer instead of become well.
While health suggestions are valued by each and every one of you, our bodily state is much more complicated and I apologize for not making this clear earlier, I was not expecting the conversation to take this particular turn. My question was originally how, as a wife, can I help my husband to bear his cross better. I know men are different than women, and they need certain words said and actions done differently than a woman needs. Some of you suggested giving more space or spending more time if either are applicable, and that is kind of you and I thank you, I will keep that in mind. The thing it seems he needs the most is for me to say the right thing that brings calm, because he repeatedly "rants" to me and I don't believe what I have said so far has helped as much as it could.