2nd & 3rd Grade Homeschooling

I have been homeschooling my 2 boys for 2 months now via a Charter school and they use the K-12 program. I am amazed at how much materials there is to cover and learn during 1 school year for each of the grades. My older son has obviously completed 2nd grade last year and he has not completed half the materials my current 2nd grader is doing now!