Animation can and does take time. 

From script writing, story boards, voice acting, ect. there is a lot that can go wrong, one thing we learned though, is that giving up is not an option.

It does not matter if it is 2D or 3D creating an animated series can and will take forever.

doing something you've never done before does take a lot of time, trial and error is important, if you don't know how to sove problems, you'll never grow.