Door gasket. The refrigerator (not the freezer door) is not closing/sticking to the metal, the

Question

The refrigerator (not the freezer door) is not closing/sticking to the metal, the door stays open and the food gets warm.Do I need to replace the gasket? if so I already call and the part is backorder 30 days I can't wait that long !!! Do you know how can I find the part sooner???Thank you !!!Madelyn