My baby is 11 months old. He weighs 22lbs and 27 inches long. He has outgrown his chicco infant car seat. His feets clings outside his seat now. Is it the right time to shift him from infant car seat to the toddler convertible car seat? We are planning to go on long trip in car, shall we still carry the infant car seat so that he can sleep or convertible car seat is as comfortable for babies? And which convertible car seats are good for babies. Any suggestions. Thank you.