I will not give you advice, because it really is up to you, but I will tell you this from my own experience. Do with it as you wish.
As I had been wearing my Mirena for 5 years and went to get it replaced, my doctor said: Oh, that's not really necessary yet, they are good for seven years.
I said: that's not what I heard when it was inserted.
She said: I know, but they were very new back then and had not been tested as much, so they told you five years to be on the safe side. But now we know that seven years is okay.
Apparently in Europe, where I live, Mirena has been available for longer (I got my first one in 1999) and it's now approved for 7 years here.
I've also Googled it a bit and it seems my doctor was right. I'd suggest that you do the same. I hope this is helpful!