I've been inactive for almost 2 weeks - and why you actually shouldn't do that, in addition a cool trick about gaining more subscribers:
Because I was really busy, I didn't upload anything for the past 2 weeks, which can be very harmful, if you do it for like longer than 3 months - you will lose a lot of subscribers, because they think, that you are dead or at least, that you will never upload anything, again. It is really important to constantly upload something on YouTube, to be a constant uploader and the best would even be to have a upload schedule. To create one, you can use a schedule creator, which you can also upload to YouTube, so your fans know, when you will upload something to YouTube and they will start to be hyped for your videos. In my case, I should probably also start to get an upload schedule, even if it can maybe be hard to handle.