Rear facing confusion..

L•M•S • Married & Momma of 2.❤️☺️

So, my son is in the height and weight range for a front facing. He’ll be 2 in 5 months. He’s literally out of leg room, but I’ve been keeping him rear facing cause of advice I’ve gotten. But he’s so uncomfortable plus he’s in the weight and height range for front facing. Any advise?