Hey Em,

I am not sure what you mean by a reversible car seat are you talking about the ones that go from birth to say 18kg? My understanding is bubs need to be rear facing until a certain weight rather than age but they say 6 months because thats the average age for the right weight??
Just to be on the safe side - I would recommend talking to a Vic roads approved fitter person (or equivalent) that way you are getting the best advice.