As @Lil bear said.
However, if I were you, I'd stay put for 2 more months at current address. USCIS and address changes is like playing hide and seek. You'll change the address, but they still send the GC to the old address and you end up having to chase them for it, a process which takes more than 6 months, if you're lucky, that is.
So, if you can stay put until you receive the GC, stay put.