How to keep marijuana plants short and tiny?

Hello, this is my first time growing and my seed just sprouted, but I really don't want it to take too much space or be too noticable as people around here are judgy. I'm growing outdoors. I've read that topping plants and LST might help. I also don't know if there's a way to induce flowering? I don't care too much about a big yield as I'm not a regular consumer and doing this just for fun.