Welcome to the Q&A Forum

If you are going to move it, do it soon. Also compile a list of places where you have already gotten the links and message the site owners to ask them to update their links.  The longer you wait, the more of a pain this will be.  Also, is your other site as sound for on-page optimization as the current one?  If there are issues with title tags or h1 issues or any number of items, then it may not be as successful on the site where you want it to be.