Impression that my plant does not grow in height compared to other growers.

No need to compare what your plant looks like to other peoples' plants, there are too many variables involved to make direct comparisons, such as lighting, temps, nutrients and type/strain of the plant. However, there are a couple of things going on. Firstly, one litre every 3-4 days is nowhere near enough, more like 3-4 litres every 4-5 days. Your plant will not grow roots in dry soil, which can limit growth. You want to water the entire pot, from side to side and not just next to your plant. The substrate needs to be moist, top to bottom. Over watering in fabric pots is nearly impossible, so do not be afraid of giving much more water than you currently are. Secondly, unfortunately you have topped this plant which generally is a no-no with auto plants and is most likely the main reason your plant is not getting taller. When a plant is "topped" the plant undergoes a "metabolic shock" caused by losing her head, basically. Once the top (head) is cut off, the plant first tries to figure out what happened, "decide" on what happens next, then implement a new "strategy" for where growth will now go and which part to designate as the new "head" of the plant. All this takes 7-14 days to occur, during which time growth stagnates. Since an auto only has a roughly 4 week growing period before flowering starts, topping, with its one to two week recovery period, and where no/very little growth takes place, severely handicaps the plant. At this stage, there is little you can do, other than continuing with your current care routine and learning as much as you can while being patient with your plant. She will still grow and flower, but probably not as much as you may have been hoping for. Topping and other "high stress" growing techniques are best used on photoperiod plants, where recovery time can be dealt with effectively, and the growing cycle can be extended to compensate for the "metabolic shock" allowing for bigger plants before flowering is initiated. Hope this helps,.... Organoman.