Hi,
I think the best advice is to take the fat part slowly.
Don't fall head first into a bucket of butter.
We have been conditioned, for decades, to go low fat. And to think that fat is somewhere between the devil incarnate and a stab in the heart. That kind of conditioning takes a while to overcome.
So, I would cut your carbs. To whatever level you feel is appropriate.
And up your fat. A bit.
Eat normal quantities of protein foods.
Fill up on non-root veg. A few berries. Full fat yog...
And see how you feel.
Still hungry? Then add some butter to your veg, or cream to your coffee. Or have a cheese snack...
Feel it's all too rich? No worries. Dial back on the fat a bit, wait a few days and nudge it back up. You will be surprised how quickly the body adjusts. And gets to love your new way of eating.
Still craving carbs? No biggie. Just cut the carbs further, and up the butter, cheese, oil and cream. The cravings will fade. Keep dropping carbs til they disappear.
That's the way I do it.
But you can go the high tech MyFitnessPal, x grams protein and x grams fat route. That's more work, and i can't be bothered. But it was interesting to try for a while. And some people love the precision.
There's a nutritional calculator on the
www.bloodsugar101.com website, if you want to calc your ideal numbers.