Wight loss help plz!!!!!!!!!!!!!!!!!!!!!!!!!!!…

Hi im scottie and i have no clue really how to lose some whight I use to walk around alot but now since school let out i dont want to do anything I whigh about 231 pounds and im only 16 be 17 next month and i wanna get to 150 before may 18. . . I was succes full i lost 10 oounds since i started now i just dont know how to keeo loseing the pounds i dont eat the best calories i eat less than i am poes to. . . So help