50 carbs is pushin’ a bit on carbs. And some people do seem to find that a lot of dairy can work against them.
My own inclination would be to take the carbs down to maybe 10 to 20 max or just take a few weeks and try out carnivore, and maybe lighten up on or even eliminate the cheese. Might it be a good time to try out the BBBE thing? (Beef, Bacon, Butter, and Eggs) Have seen some 30 day BBBE challenge things a few times and been tempted to join in. Then again, some days, that’s not all that far from what I’ll eat anyway.
For energy, you have to have something to run on. Carbs and fat are the two easiest sources of fuel for your body. Protein, well, it may be able to pull some out if it has to but it’s not as easily available. There are also limits as to how much fat you can pull from your onboard fat stores. (Kinda seems like that’s been a topic somewhere on the board, probably related to fasting and “how much fat a person can pull from their own fat stores per day” but may be somewhat applicable here, too. Better minds than mind will probably already be doin’ the math. )
I know we’re all a little different and some methods tend to fit more easily to certain individuals. Just sharing my own inclinations. Wishing you the best of luck whatever you try. Hope you’ll get it worked out and get into a groove that fits you.