Hi Ashley! I have to be honest and say that a couple of weeks is really not enough time to find out what you legs will respond too plus see a huge difference in that time. But if a couple of weeks are all you have then I would say if you have never done Leaner Legs before, chances are your legs will react simply because it is something new to shock your system. While it still has squats and lunges (exercises you said have not worked for you) the workout will do them in an order, pace, and rep style that is different from what you are used to...which is a good thing.
Also, try to do about 400 (non-weighted) walking lunges and the stability ball portion of Pyramid Lower Body two times per week.
Side Note: Remember that your legs will initially swell slightly after your first few workouts while they heal so really increase your water intake and help promote the healing process.
Try to eat as healthy and clean as possible too. This will make the biggest difference of all in a two week period.
Sample Two Week Workout:
Drink LOTS of water throughout the day, everyday!
Monday: Leaner Legs
Tues: Cardio
Wed: 400 walking lunges plus ball work in Pyramid Lower Body
Thurs: Cardio
Fri: Leaner Legs
Sat: Rest
Sun: Cardio plus 400 walking lunges plus ball work in PLB
Mon: High Intensity Cardio
Tues: Leaner Legs plus PLB ball segment
Wed: High Intensity Cardio
Thurs: Leaner Legs plus 400 walking lunges
Fri: Cardio plus PLB ball segment
Sat: Rest
Sun: Rest
....off to the beach. Have a great time