Short answer: NO!!!!!! Autoflowers don't like anything akin to major stress and fimming or topping or anything like that is major stress.... hell, they don't even like being transplanted! They have their own programmed timing and anything that disrupts that will pretty much guarantee your grow is a failure! The most you should do to an autoflower is some LST...
Good luck!
Hi Lew420,
Unless you don’t have to reduce plant height in the grow room it’s not really recommended to fim/top autoflowers as they don’t have time to recover before they turning to bloom.
Have a nice day.;)