I know you didn't ask but just thought I'd share that one, because often the next train of thought will be "what am I doing wrong" and people don't like to hear where they actually are going wrong, even when they ask... 
you might get there, all channels grow differently because all channels are differentIf a big channel does a collaboration with me, that would probably leave a long term subscriber spike, which would be great!Well it took me about a year to hit 2k subs. But I once got 2000 subscribers overnight for a collab I did with Onision. So I'd definitely say it is possible!
Wow, that is a lot, that is about 50 subs a day!!! I would be excited to gain 1 sub a day!lol 2000 subs took me like a year to get, maybe even longer, its always tough at the start!
But now im getting 2k about every 35-40 days.