Some will warn against topping autos, but you can: If the plant is otherwise healthy. If you start soon as possible (I think 4th node). My NLights auto started flowering on day 22 from sprout. Also if you leave about 1/2 “ or so so it won’t want to split.
I agree autos can be very touchy to trimming because of there Accelerated rate of growth and Concentrate on growing only and giving it unwanted stress can result in it not recovering properly or at all. Not saying you can’t and get f you do … do it slow little by little.
In my limited experience (also first time) I did some lst to my autos and it’s working well. Basically bend it over and tie it down, tuck leaves to expose the bud sites.