I need to buy a new car seat for dd, her old one is coming apart. She's 2.6 and quite big at 17.7kg. I've been looking at car seats and stage 1 says up to 18kg/age 4, so stage 2 is from age 4 and 18kg. Obviously she's going to be 18kgs pretty soon, but not 4, so is she ok for one of these seats? They all use adult belts too, which I think would be ok, except that she does fall asleep and flop forward, would they hold her enough or do I need to buy one that does stage 1&2? Can anyone recommend one that does this (not Britax - as thats what I've got thats falling apart) or a good secure stage 2 seat?
Thanks