It is possible to be insulin-resistant and still have normal blood sugar. According to the late Dr. Joseph Kraft, a noted diabetologist, insulin starts to rise as early as twenty years before blood sugar starts to get out of control and a diagnosis of diabetes becomes official. He called the pre-diabetic state “occult diabetes” and "diabetes in situ."
This is a sign of insulin-resistance. The over-secretion required to force excess glucose out of the blood often causes the blood sugar to dip too low. Then we need to eat more carbs to recover, and the whole cycle repeats.
That is excellent. It means you are keeping your insulin low enough for your body to be metabolising its fat store instead of glucose.
Don’t forget that there is salt naturally occurring in the foods you are eating, and that counts. Signs of insufficient salt are headaches, lightheadedness, and constipation. If you are experiencing any of these, then a bit more salt will help. If you’re not experiencing any of those effects, then you are getting enough salt.
If you get too much, the side effect is the opposite of constipation, lol! As long as the salt tastes good, we can safely take more, but if it starts to taste horrible, we’ve had more than enough.
P.S.—Also be sure to drink to thirst. That will help keep salt and the other electrolytes in balance. There’s no need to go crazy and drink many litres a day, just drink enough to keep your thirst satisfied.