it is 3 weeks and 1 day old it is an autoflower i believe i just trnasplanted it it was beginning to root bound i would like to lst but when i feel the stem its kinda stiff it bends but i feel like it will snap if i do the 90 degree angle
You might wanna give it a few days if you just transplanted it. Then you can start training. Try tying the bottom of the stem off first. Then tie as close to the top as you can and bend as far as you feel comfortable. Then wait a day or two. Then bend a little more and repeat till you get where you want. Then continue as needed.
of course u can lst, how many nodes u have by now ? also u can check my current grow on my signature its auto and iam lst