I do still weigh/measure and track at almost five years out because I've learned if I stop doing it for more than a few days, my weight starts heading north. But that's me - you may be different. My dietitian also recommended I stop doing it, but I know myself too well....
also, I'm not trying to be rude or anything, but losing nine lbs in a month isn't realistic if you're anywhere near your goal weight (or even within 20 or 30 lbs of it). It would take me three or four months to do that - at minimum - unless I was practically starving myself. Even if I'm being really careful with my food intake and exercising, I can only lose about 0.5 - 1 lb a week... So different from when I was morbidly obese!