I have DTs who are nearly 4 and are currently in stage 2 car seats. DS1 is fairly tall for his age and his head is now above the top of the car seat. Do we need to move to the next stage seat now? Not sure what the rule is on this.
The problem is that although he is tall, he's skinny and only 14kg. His twin is even lighter. Most of the next stage seats seem to start at 15kg and they won't be heavy enough for these for a while. We also need to keep DS1 in a car seat with a 5-point harness as he had SN and tries to escape from car seats. He's not ready for a seatbelt.
An added complication is that we are expecting DC3 in June and will need to get 3 car seats across the back of an s-max. The baby will be in a maxi-cosi cabriofix and we need 2 high back boosters that will fit alongside.
Any suggestions welcome!