长慢慢 slow progress?

immediately i've got feedback that something's wrong.
seems that 长慢慢 is a bit of a half-way sentence.
Some say i should add something to it.
like 智慧长慢慢. which would mean knowledge grow slowly or something like that.
(thanks to Evonne for that)

well, in the case of this blog, it means my Mandarin language 长慢慢.
...How do I say that in Chinese? =/