Surge!
You gotta stick with just one YouTube channel, man. In your channel trailer you mentioned you have 3 channels. Stick with one, focus all your attention on it and it will grow.
Here's some other things I would recommend...
1) Channel Trailer:
- Lower/zoom out the camera angle so that the frame doesn't cut off your head
- Play some background music
- Look into the camera when you speak
- Shorten the video. Just get the important stuff in there. You want to hit your audience with the action quickly.
2) Lengthen your channel's description. YouTube favors channels with longer descriptions.
3) Slow down the posting man! You don't need to post three times a day. If you posted less often, you'd have more time to put into editing or promoting your channel. Recording and posting are only 2 parts of the cycle. Try posting some of your videos on facebook groups or something like that to get more attention.
Hope this helps!
Cheers,