L/C forclosure

I have a land contract with a couple that has fallen behind on taxes if they are not cought up soon i will risk losing it as well. So i was going to pay for all the back taxes and strat the forclosure process. How long can it take befor i get my land back and any idea of how much it can run me, and what forms should i start out with. I was a landlord for 12 years, but L/C forms look and run a little different.
Thanks