My 6.5month old boy is starting his helmet treatment in a week and I'm aware that he'll not fit in his Primo Viaggio car seat with it on. As he'll be wearing it 23 hours a day I can't really take it on and off to suit car journeys. My problem is that he isn't yet sitting unaided tho I don't think he's far off. Is it too early to get the next size car seat for him? He weighs almost 19lbs and is already too long for his baby car seat as his legs are soooper dooooper long.
Also, any recommendation for car seats?