How much time do we have before they kick us out?

You need to file an answer and affirmative defenses to the mortgage foreclosure complaint. They probably cannot pursue a deficiency judgment. You do need an attorney for this.

You should respond and advise the court of the bankruptcy filing. Although the bankruptcy did not eliminate the lien on the property and the lender can foreclose, you should make sure that a money judgment is not entered against you. You can raise defenses to the complaint of any are available. The process in court can take anywhere between a few months to a few years, therefore it is important that you stay inform of the process since once the property is sold and title transferred, a writ of possession can be issued ordering the sheriff to remove you form the property. Please keep in mind that every case is different, therefore, I would recommend that you talk to an attorney in order to evaluate all options and possible outcomes.