Hi Liza,
It is easy to focus on serum glucose levels because that is trivial to measure, but it is important to remember that the true concern is the level of insulin.
If you are starving and craving carbs, that is characteristic of a standard calorie restricted diet when a person is not keto adapted. Protein also engenders a surprisingly large insulin response and eating protein in an attempt to curtain cravings for carbs may not be helping.
If you are not in ketosis, I would make certain your net carbs are below 20g/day, and I would cut back on protein, perhaps less then 50g/day or even 40g/day. I would quit snacking because just eating will generate an insulin response even if you spit the food out and if you are having a hard time eating fat, then just eat fewer total calories until you are keto adapted.
I am personally quite sensitive to protein levels and I find it quite difficult to eat 1600 kcal/day while keeping both net carbs below 20g/day and protein below 50g/day. Obviously, you must make your own choices, but when I get to my maximum carb and protein macros I simply am done eating for the day without regard to the total energy content of the food I have consumed. While in ketosis, the rest of my daily energy can easily come from my fat deposits and I find it helpful to think of the utilization of stored fat as part of my daily macro ratios.
I hope at least some of this will help you achieve your goals.
Warmest Regards,
Richard