ds2 is 6 months on 24 pounds and long, his head is above his infant car seat so we bought a britax that is supposed to fit in the car reward facing, but there is only a five inch gap between the side of the seat and the car roof to get him in and out making it very hard, I called Britax and they said he was too young to go forward facing which would make it so much easier to get him in and out all the time, he's a big baby and very peed off in his car seat at all times, he can support his head and neck well but of course still falls to the side if left unaided. What should I do, leave it rear facing or turn it to face forward?