I personally waited until DD reached the weight limit but was also told a lot of places refuse to turn bubs around until 10mths as their body, no matter how heavy, is not physically capable of withholding the impact?

I am not 100% sure on how accurate that is, there are new rules coming out about child restraints etc, i think there is another thread on here somewhere, maybe check on those!

That said my DD didn't reach the weight limit until around 10.5mths anyway so they were happy to change the way it faced!

Sorry prob doesn't help, good luck though!