You also don't need a scrog to keep them shorter. You can get away with just using some paperclips and something to tie the branches down.
This is a plant I'm growing right now:
11 weeks in Veg, 2 weeks in Flower now. And last time I measured, it was only 16" tall. I use some craft ribbon, with loops tied at one end,, I place the free end through the loop, around the branch, and use a paperclip to secure it on the edge of the pot.
Previous plant:
This one was only about 14" tall, and yielded over 2 ounces.
You can do it man, just take your time with everything you do