Your English is excellent and I had not noticed that you weren't a native speaker. After all, even some native speakers make posts with bad grammar and that silly text-message talk that is much harder to understand!

If the new dirt already has fertilizer in it, you should definitely wait to feed for at least a little while. Pre-fertilized soils are difficult to work with growing cannabis indoors.
I like to water in the morning so there is no chance of splashed water sitting on leaves all night and possibly causing rot.