The top harness slot falls at 17 inches, making it one of the tallest available seats. (bestcarseathub.com)
The rear - facing mode has a very low set of harness slots for newborns. (thespruce.com)
You'll want to look for a seat with both very low weight minimums and very low harness slots (these should be at or below your baby's shoulder). (candokiddo.com)