DD is 4 and occasionally falls asleep in the car. She is in a booster with a normal seatbelt. When she falls asleep she ends up slumped forward with her head almost on her knees. She doesn't look very comfortable and it can't be safe. Does any one have any ideas on how to stop her from falling forward while sleeping (other then putting her back in her "baby" seat with the harness which she's too heavy for)?
Thanks in advance.