Did you just drop from the 2600 to 1800 or did you gradually bring it down over that 9 weeks? If you drop your calories to fast you have nowhere to go when your body adjusts. You and up binging.
The strategy I have been successful with (doesn't mean you will be) is to increase the volume of food while decreasing the calories. I like to use coliflour pulp after it's been run through a juicer, and psyilium husk.
You pound 250 grams of coliflour paste (bake it into something or blend it and chug) with some psyilium husk and about 500ml of water then wait 15 min BEFORE you eat your meal it's becomes next to impossible to binge. There is no room.
Processing the coliflour is time consuming but another trick that works well for cutting down is to stay buisy all the time. Takes your mind off it.
Most people could use more fiber and water in their diet. Maby not as many around here, but out inn the world defiantly.
I count the coliflour paste as 1/3 the calories of the net carbs entry in mfp.
I was baking the coliflour into a garbanzo cake with carrot pulp and protine powder. I would pound cake, husk, water, and raw broccoli all day totalling about 1600 calories then have a ribeye for dinner. With some more cake.
Steak and cake diet.
Results are in my profile album. I did it this summer.
I call them Jupiter cakes because they have some Walden farms sauce in them and that shit is from Jupiter where calories do not exist. Elon musk sent a space rocket there and brought a bottle back so we could replicate it.