Is it true that a 1000 calorie deficit at 16 isn't good for your potential

[weallgonnamakeittt]

ive been in a 1000 calorie deficit for around 3 weeks now, I was previously in a 300, then 500 calorie deficit and now just started a 1000 calorie deficit because I wanted to see progress sooner, im curious if it isn't substantial and isn't worth it at a young age, if you could also tell if I should bulk lmk, these pictures a bit older but now im around 12 percent bf with visible abs

 

[lqunn]

stick to a 300 cal deficit, 1000 isn’t sustainable

 

[Osteo.]

ive been in a 1000 calorie deficit for around 3 weeks now, I was previously in a 300, then 500 calorie deficit and now just started a 1000 calorie deficit because I wanted to see progress sooner, im curious if it isn't substantial and isn't worth it at a young age, if you could also tell if I should bulk lmk, these pictures a bit older but now im around 12 percent bf with visible abs

Bulk till your 25 or stay in a maintenance and blast roids