I moved DS1 up to a HBB a couple of months ago as DS2 had outgrown his infant carrier and needed to move up. Seemed to me the best option just to move DS1 up too. We went for the Recaro Monza high back booster. He was just over 15kgs which is the minimum weight for this seat.
However when we are driving for long periods (which we do quite often as my parents are 200 miles away) he falls asleep and slumps right forward. So much so that a couple of times he has fallen right down so his head is on his knees, bent double. My instinct tells me that this is dangerous, but just how bad is it?
Is there anything I can do to improve this? Have tried adjusting the headrest to no avail, I didn't get the seatfix version which was a complete error but DP threw away all the packaging before I realised so couldn't be returned, so it can't be reclined at all.
I would consider getting a different seat if needed, but what should I be looking for? Any advice welcomed, please!!