Weight loss is stalling :( help

(Alright mfp stop deleting these posts please. I know the guidelines say to not promote unhealthy diets but thats not what im doing. Its just a question...)

Im 17 male, 240 pounds and I eat 1400 calories a day (not sayin you should), but my weight loss has stalled? 1400 calories should be low enough to continue to loose weight. How long do you think im going to stall cause im getting frustrated.

(And im fine. Ive been doing this for 2 weeks without binging or getting weak but if this happens i will change)