How do i get my 12 and a half year old son to sleep more he never agrees to sleep and even though he understands the need to sleep for growth. help!

Choose your battles: You cannot force your son to sleep any more or any less than nature causes him to sleep. Please forgive my frankness. You care for junior, and i sorry that someone gave you bad information. Drop this battle & be sure you are right when the more serious conflicts of the teenage years arise -- and even when your are right, your relationship with junior is what's most important.