First we need to do a HASELL check …
Height > 3000ft
Airframe – clean config to start with, no flaps or as required, undercarraige up if possible / required
Security – nothing bouncing aroung
Engine – green, carb heat on, fuel pump on
Location – (ABCD) Active airfields, Built up areas, Controlled airspace, Danger areas
Lookout – 360 turn or two 180 turns

As speed decreases the induced drag from the wings increases so you actually need more power than you think to maintain slow flight.
rpm to 1500, hold altitude and 5kts before desired speed, in this case we want 65kts, increase power to about 1800-1900 to maintain 65kts. You will have a high nose atitude