OK. SO I have a 10 month old son and a 2.5 year old daughter. Our son is 20 pounds nad the doc said we could put him forward facing. I want to keep him rear facing as long as possible just to be safe. He wants us to have him use our daughter's car seat nad get her a booster. I honestly do not think either are old enough and tried to find research supporting it, but I find that a lot of boosters say as long as they are 30 pounds. Any advice or information you ladies have would be appreciated. Is it ok for them to be moved up this early?