Hi @robintemplin, salt has been tricky for me since I started keto almost five years ago. For me, lack of magnesium causes restless legs, heart palpitations and anxiety. I tried stopping it on carnivore to no avail. I had to start taking it again because the heart palpitations and restless legs reared their ugly head. If I recall, I had stopped it for over a month, so it did seem to take some time to draw down the stores.
My muscle cramps have alway been caused by not enough salt. I was up to 2 teaspoons a day at one point. But, what helped me was finally getting off the Diet Coke (it was quite diuretic for me) and drinking less fluid overall. I think I was flushing electrolytes from my body. Now, I rarely need extra salt.