Baby Booster When Can Baby Be Put In A Booster Car Seat Facing Back?

When can baby be put in a booster car seat facing back? - baby booster

My baby is 7 months and 15 pounds 14 ounces. It can sit longer. I know you can not do this baby in a child seat forward until after 1 years old, but I was wondering if someone knows whether I was in a safety seat in front of aft.
Thank you very much!