When I dropped weight, I was consistently loosing 1.5 to 2 lbs per week.
I made sure not to starve myself, because I knew that wouldn't last too long.
I ate a lot of high protein, low calorie foods that were also filling. I made a big effort to add as few calories as possible when cooking (baking instead of frying...spices instead of dressing, butter, or oil). It worked for me.