When can my son start facing the front in the car seat?

California law is age 2.

Not until at least 2.

If son is outgrowing infant seat he'll need a convertible carseat than can rearface

40 Lbs Or 40inches tall

But if you can, it’s so much safer to rear face as long as possible

https://m.youtube.com/watch?v=sssIsceKd6U

Not until past 2 in California

I did it at a year n half

After age 2 but I didn’t turn my daughter until she turned 3. It’s so much safer to be rear facing.