I'm sure your Agent told you; and I am going to repeat and reinforce it:
If you have to ask; you shouldn't be in a Shortsale!
If you do not have the patience to wait; you should cancel your Offer now.
If you are going to pester your Agent by calling him every day, asking for the latest update; please let him off the hook.
We can pretty much guarantte two months, but it might be 9 to 10 months before you hear anything.
And even then, the Bank may decide to not do a SS, beciause the Market has gone up so much.
I would put your odds at 20%.
Forget you made an offer; do not enter it on your Calendar!