It sounds like you're trying to get from the mansions at POR to POFQ.
Buses to DTD always make all 4 stops at POR, and then go to POFQ. The stop order is POR West, North, East, South, then POFQ. DTD buses start running about 8:30 a.m., or 1 hour before TL opens, which ever is earlier. Be sure to tell the bus driver that you are going to FQ; otherwise, the stop may be skipped if the bus fills up.
If your room is close to the East depot and you are traveling in the a.m., most buses from the East depot to Epcot or DHS also stop at FQ from 1 hour before park opening until around 11:30 a.m. Ask the driver to make sure. If not, wait for a DTD bus.
Going the other way, before 8 a.m. and after 11 a.m., most buses to Epcot, DHS, and DAK stop at POFQ first, and then make all the stops at POR. Between 8 & 11 a.m., you'll have to be very lucky to find a bus from POFQ to POR.
After 10:30 a.m., you can also ride the boat between POFQ & POR South depot in either direction.
Bear in mind, bus routes are subject to change at any time without notice.