Congrats on the calories, and working to fix the exhaustion. I just posted an article in the EMF thread that might be helpful.
It maybe the kind of carbs you added were not helpful? Yea, yea, yea! the water will eventually make a difference. I will admit though that only about a third of my fluids are water, I drink all sorts of different teas for various purported health benefits.
I usually let DH's dictations sit with zero response for a while, and go back and revisit after I have had a chance to clearly formulate my response. Not arguing, just stating my position. If he goes back to his exact position, I walk away again and let him think about it. Then come back later and try to clarify, including some of his points if reasonable. On smaller things, where I think he is being unreasonable, I tend to ignore the orders. (not possible in this case though).