First time with autoflowers, I've done the LST technique, should I also do topping/apical cut or would that stress the plant too much and stop its growth?
Most people will say never top an auto. I'm in that group. honestly not a fan of toping anymore.
top it and get two bud sites.
or just bend the top over.
You keep that top and the other nodes are now also at the top.
you now have 3 tops
I don't think you should ever top an auto unless you have grown the strain and genetics before and know that the plant can handle the stress without stunting it's growth or making it go into bloom prematurely.
I would stick with the list for auto flower cannabis because they just aren't as resilient as photoperiod plants and you can't control they're growth phases if anything we're to go wrong.
I hope this helps.