When did you guys transition from your travel system to a regular stationary car seat? My LO is only 4.5 mos but I feel like he’s not comfortably fitting in his Britain’s travel system car seat anymore (is this even possible?). So when did you switch? Also, is it a huge pain? I feel like the travel system is so convenient (especially in the winter) since you can pack them up indoors and just carry the car seat in and out. He definitely getting heavy in it tho, so I won’t miss that part. Thanks in advance.