Replying to Getting used to longer skis

So I picked up a new pair of rossi's at ski swap and they are a good amount longer than the skis i am currently riding on (161 to 174) I picked them up because I've been going through a growth spurt and i'm outgrowing my old skis and i thought i would be a good idea to snap these skis for next year at the cheap price they were being sold at. ANYWHO, Ive been finding it really difficult getting used to them in the park. I cant butter, rails feel awkard, I cant swap or spin out, and they just dont feel as playful. I know this is what u should expect from such a big jump but i just wanted to know if there was anything I can do to get used to them faster? or am i just gonna have to be paitent.
Thanks for reading all that. K+ plus for some help