Hey Que3nBe3!
I have only grown a couple auto's but have some advice I have always been told from other growers. Since auto's have a limited lifespan we want to make sure it deals with the least amount of stress. I have seen better yields with auto's not topping, HST and heavy defoliation. These can all lead to stress, as well as constant varying pH, overwatering, etc...your normal stresses that will slow a plant down. I found my best approach was to always use LST and only defoliate very crowded area's and a couple leaves here and there blocking liught during flowering. I have also found using 3gal pots worked best for me, I couldn't get them to fill the 5's but filled the 3's nicely.
Since auto's will automatically flower, you can run a 24/0, 20/4. or 18/16 light schedule with these plants. In the odd occurence they don't start flowering after they should've, you went then switch lights to 12/12 to trigger flowering. I like to use 18/6 for my veg tent and auto's, find the plants like a little break from the light.
Not sure if this is an occurence with autoflowers....but in my experiences I have always had to feed a little less than my photos. I would suggest starting low when you add nutes, I have burned mannnnyyy leaves hahaha.
Everyone has different experiences and this is just what I find works for me.
Cheers and good luck!