It's great that you want to address this issue! The American Academy of Pediatrics recommends that children this age have very limited TOTAL screen time--1 hour or so-- per day. That includes TV, movies, and computer time. So you will need to help your child be very selective about how that time is spent each day. It will be important not to make a change seem like a punishment so you need to have alternative activities available. What other things does your child enjoy doing? Being outside in decent weather is a great alternative. Art projects, age-appropriate books, puzzles, and games or anything that sparks creative play like dressing up are all good bets for the colder weather that's coming soon. This may require a bit more of your time initially, but it is an investment that will pay off in the long run! And be aware of your own TV habits because children learn a lot from their parents' actions as well as their words.
Jeanne H. Brockmyer, Ph. D.
education.com expert clinical child psychologist