So ds will be 1 on the 30th. He is a big boy almost 30 lbs already. Everyone here seems to talk about extended rear-facing and I never heard about that till this site. With dd I forward faced her once she turned 1 because that's what I thought everyone did. So what should I do with ds? He is a very big boy so idk what to do.
I would definitely recommend keeping him rear facing to the 40 lb limit of his current seat. Regardless of size, their little spines are still so fragile at that age. My son is still rear facing in our main vehicle at 4y8m.
I would keep him rearfacing at least to the limit of the seat you have, which is 40 lbs or 40 inches. I wish I had that option with my big boy, but back then, there just weren't any seats that went past 35. So he had to go forward at 21 months.
Get a good convertible and rear face until the weight limit or 2 years old. My 18 month old was 25lbs at 1 and 28lbs at 18 months. Even our cheap evenflo titan goes to 30lbs. Your childs safety is never worth the risk no matter how small.
We also have a britax marathon and an alpha and omega. All have been great seats.