This suggests making a prayer journal for your children so they can look back and see what you prayed for throughout their life however we use prayer journals as an exercise for our clients as well and it does wonders for them
Pray! My daughter at 8, Becky, prayed "O Lord, heal Greg, Please heal Greg," then lookin' up from her knelt position on the floor, said , "Well Lord, aren't u going to heal him?" That's expectation! by the way...Jesus healed him!