I really hope that the Chiro helps.
Although I see a normal Chiro for myself, (I have to my son is now 7.5 kg!!!) I took him to a Paediatric Chiro.
I don't know if they are better than normal Chiro's but I do know they have this special machine they use on babies that is very gentle.
They certainly are expensive, I think it was $90 for the first visit.
However the improvement was worth it.
Although I went to their Boronia clinic their main clinic is in Ivanhoe.
If you would like the details I am happy to post them on the forum if this is allowed.
Regards