A couple of thoughts here: First, insulin resistance can impede fat loss, and it may take some time to reverse, before the excess fat can come out of your adipose tissue again. It may be necessary to eat even less carbohydrate than 20 grams a day, or to eliminate carbohydrate altogether, in order to get things started again.
Second, restricting calories usually triggers the body to hold onto its reserves, in order to get you safely through the famine. Eating to satiety is a better strategy over the long term, because it ensures that you are giving your body enough food, but not too much. With your body setting the limit, not you predetermining some arbitrary target, you can be sure you are right on target.
Third, there is wide variability from person to person, but in general, moderate protein works best. Then you can fill in the missing calories and satisfy your hunger with fat, fat being the only macronutrient that has practically no effect on insulin secretion.
Fourth, as you probably remember from the first time around, people have been known to put on lean muscle and increase their bone density at the same time as they shed fat, and this confuses your scale into thinking nothing’s happening. It is possible to lose inches while total weight remains steady, so the more metrics by which you gauge your progress, the better. Put it this way: would you rather look as though you’d lost thirty pounds and stay the same weight, or lose the thirty pounds and not look any different?