How much weight could someone like me lose in a month and a half?

last time I lost weight was like 10 lbs. (nearly a stone) in a week....there's no big surprise there for me because I need to lose like at least 2 stone to go down to a healthy weight for my height....and the fatter you are the more weight you can lose quickly...

anyway that was like nearly a year ago and since I had lost hardly a stone it didn't hardly make a difference in the way I looked in the mirror....I just saw a bit more definition in my chin and thighs if I looked closely.

(and I wasn't starving myself, I just ate healthy food and cut out unhealthy food and drinks)

since then I gained the weight back and I'm back to my previous weight and have been like that ever since I lost the weight...

This time I want to lose more like 2 stone...

could that be possible to achieve in a month and 2 weeks?

If not, could I at least lose like a stone and a half?

thank you!