Thanks hun - can you link me or PM where you got this info from please? I am just looking at the current MR user guide on the Britax site and it says to use the seat as a Lap sash or H Harness from 14kgs... ETA: Just realised that is a minimum!
I got that from Britax. Had a lovely conversation with a rather rude woman there when I was researching bigger seats for DD2 about 5 months ago. She kept refusing to give the weight and age limits for the seats, would only give me the shoulder heights! lol Ended up speaking to her supervisor too. End result was that they were changing the guidelines from ages to height.