Should I Have my Legs Lasered (Soprano Xl) Every 8 Weeks or Wait for Significant Regrowth?

My skin is very fair and the hair on my legs is (was!) light to medium brown and a bit course but not thick. I purchased a package for 6 treatments. I've had 2 treatments 4 weeks apart and the next is scheduled for 8 weeks later. The second treatment was done after 4 weeks because the technician gave me the wrong advice; but seems no harm done. I've had very little regrowth therefore should I wait for more significant regrowth or adhere to a 8-10 week schedule?