So confused!! Car seats and infant carriers??

Aubrey • 30🥂Wife 💍 Fur Mom 🐾 Mother of Twin boys 💙💙 MTHFR, Factor V Leiden, Hx of DVT & May Thurner Syndrome 💉

So I was looking at purchasing the Graco 4-in-1 convertible car seat because it says it works from infancy (min 4lbs) to 10years (max 120lbs).

My best friend told me that I still need an infant carrier like the Graco Snugride 35 for when they are newborns.

Is this true? Do you actually need both of you buy a convertible seat?

I’m lost!!! Help please 🙂