Develop a plan of work, even though you will have to modify this as the mapping proceeds. Define daily tasks such as logging and correlating a number of streams or a particular section. Divide the area into blocks and map these systematically one to the next. Rather begin from a well exposed section and move outward from this. If you get stuck in an area and can't sort it out map the surrounding areas and go back to the difficult area later when you are more experienced.
Geological mapping has a steep learning curve.
When you start in an area it takes time to get going but as the days pass your ability to read the ground and the geology improves and so does the rate at which you complete your map. What seems an insurmountable problem in the first instance can completely vanish later when you are really on top of the area.