Your plant is looking good and ok.
If you want bigger plant with autos. You have last chance to give her into bigger pot. Right before flower stage you have still some time. Btw auto flowers can be transplanted once max.
So if you are looking for a bigger plant. I would transplate it into 9-12.5l pot. Outdoor i would go 15-20l. Hope that helps you. Some growers can also sharing not honest diaries. So dont worry and keep calm couse you are doing well. Good luck!
like 1