Nuna Pipa Infant Insert

Ma

For anyone with the Nuna Pipa car seat, when should I remove the infant insert? I’ve heard it’s standard for most car seats after 12lbs, but I can’t find the instructions in my manual. My son is 5 weeks old and 11lbs, but his long little legs already hang over the edge of the car seat so I’m wondering if it’s time? Any advice would be so much appreciated!