Note however that the art of teaching phonics is designed not only for younger kids but also. If you have concerns share them.

S Is For Starting To Teach Your Kids Abc The Japan Times
Teaching phonics to children should take 10 to 15 minutes each day and these lessons should take place in several small sessions each day such as 3 or 4 session lasting 3 to 5 minutes each. Shuffle the cards in random order.
Tips For Teaching Kids Phonics At Home Scholastic Parents