m0useanswered grow question 2y ago Fast buds does good autos generally, sometimes they can be shit though, this is any autoflower though. So some helpful tips are this.
Do not transplant the autoflower, autos should be grown in the final pot they will be harvested in, this is because transplanting can easily send them into shock and when they go into shock they enter flower earlier then expected and can have reduced yields and size of the plant overall.
Do not feed them like a photoperiod plant, autos tend to get along better when they are feed less, upto 1/3 or 1/2 the recommended dose of normal feeds by nutrient companies. I like to use this web link for a guide on how much to feed.
https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/
Do not expose them to other stressors like under/over watering, light burn or temperature swings. things like 17c at night and 30c during the day. aim to keep the environment in between 18-27c or in between a 10 degree allowance. Its also a good idea to not grow autos on a 24/0 light schedule, all things need sleep and plants are no different. I like to do 18/6 from start to finish on my autos.
If you know you have issues with pests in the area or in previous grows be proactive about it and use some sticky traps to monitor the situation. once you see pests act accordingly. or just add in some BT to your water. Given that you are growing in soil "according to your diary" it can become compact easily with watering a lot at once, try and use a soft sprayer or dipper to water your plants, should take about 5 min a plant depending on the pot size. Soil will also manage its own PH pretty efficiently, you should not have to worry about it to much also given your using a PH perfect product it is normally buffered and should keep the PH where it needs to be. Weird things do happen though so keep an eye out and ask questions if your unsure. wait for a few replies and see what the over all verdict is. Best to take advice from others who grow in similar style as you vs ones who don't or have any grows on their profile.
Good Luck!