I really wasn't meaning to be negative in any way. 12 subscribers a week at first is not too bad at all. I'm getting to be an old fart, and I've never heard a story of someone being a success at something after a week. Probably never will.
In my opinion, there's probably a time around 3 months into something, where it is gut check time and you decide whether it's all worth it. Where you decide whether you will stick with it and persevere with that activity. When I hear someone say they are thinking of giving up on something after a week, I just thought it doesn't sound enjoyable and it won't get easier from here. I say do what you love to do! A lot of people never find or pursue what they love doing... as long as your searching for it, you're living!