Is it time to hop on

Im 16 and weigh 165 bench 285 squat 355 i have been working out for 3 years now but im really only getting stronger and not stronger(i weigh the same or less as i did a year ago but last year i hit 225 at 170) i dont know why but whenever i stop bulking i lose weight so fast and go back to normal ranges

Im 16 and weigh 165 bench 285 squat 355 i have been working out for 3 years now but im really only getting stronger and not stronger(i weigh the same or less as i did a year ago but last year i hit 225 at 170) i dont know why but whenever i stop bulking i lose weight so fast and go back to normal ranges