I know this answer might seem weird but it could be worth a shot. So you could approach the problem by trying to improve all of your enzyme reactions in your body.
Deuterium is a heavy isotope of Hydrogen. So it can be in very high amounts in your body as most of your body is H2O. Enzymes have lots of water bound to them all across there structure. Some of that water will be deuterium. Deuterium slows chemical reactions down significantly as it is bonded differently than hydrogen and allows less proton tunneling.
So if you have higher levels than needed of deuterium, your enzymes reactions will be slower and your enzyme wont work as it should.
You can test for deuterium to see if it's raised, if you eat a standard western diet, drink bad water, have bad mitochondria, don't get much sun, and other problems you could have high D in your body.
To deplete deuterium you can drink deuterium depleted water, ketosis diet, sun and cold. I think these last 2 work by improving mitochondria function. Basically, the better your mito work, the more you can deplete deuterium in your own body by recycling the deuterium depleted water in your mitochondria. The mito effectively remove D with CO2 if I understand correctly.
I personaly have not tried this yet however I will soon.
Another thing again comes back to water. If you read Gerry Pollacks work on water, he shows that water can charge separate under light. Long story short, your enzymes are surronded by water and use proton tunneling to work (Jim Alkalili, JohnJoe McFadden). If you get lots of IR and UV light on your skin and blood you can charge seperate the water around your enzymes. This creates a bunch of free protons to use for the enzymes reactions.
If it's possible, try getting a lot of sunlight, and eating a ketogenic diet and see if it helps.