We have a Maxi-Cosi Pria Air 70 convertible car seat with a Tiny Fit insert recommended for infants up to 18-22 pounds. Our daughter will be 12 weeks this Thursday and is just over 13 pounds, but we have the seatbelt for the five-point harness extended to its full length and it will soon be too tight. We moved it to the higher/larger position a while back.
Are there seatbelt extenders that would allow us to keep using the insert until she reaches the recommended weight, or is this a "soft" guideline...and should we therefore take the insert out when she outgrows it regardless of her weight? If so, is it safe to pad the larger car seat so she's not swimming around in there, or can we purchase a larger insert?