Thinking of induction

This is my first time growing and everything is going great my 7 plants are about 5 weeks into veg state i wanted to induce flowering on the two tallest ones which are 13 and 16 in tall. What i am askin is what to use to induce if my plant are into the ground or if induction is even a good idea any feedback would be helpful

The only way to induce flowering is a 12/12 light cycle. You can cover them with something light proof for the dark cycle.

Are you being impatient or is there another reason you want to flower them?