The foreclosure sale will be scheduled only after the mortgage company's lawyer gives you thirty days to ask for verification of the debt. After that, their lawyer schedules an advertisement to run in your county's legal newspaper. The ad must run for six weeks before the sheriff's foreclosure sale date. Your mortgage company's lawyer may be unusually busy, or any number of other reasons could be causing the lawyer to hold off on scheduling a foreclosure sale.
1 lawyer agreed with this answer
Under Minnesota law, Minn. Stat. sec. 510.01, the land that you own and occupy is exempt from a judgment creditor. Because your son is not occupying the property, it can be seized to pay the debt.