And whatever you do don't defoliate autoflowers, They're on a clock unlike photo periods if you defoliate and the recovery time is 3 days, that's 3 days lost growth on your plants, I definitely would get in there and do some low stress training give them some space between and allow more light in and a scrog when they get a bit bigger to maintain the spread, also never top autos either for the same reasons, taking days of productive growth....They look super healthy and vigorous just keep doing what your doing and like I said make a tea with unsulphered molasses and give that to them once a week until about 5 weeks left and just use ph'd water...Good luck