Hi expat_aus,
why don't you include your child in the 189 visa straightaway? It's much cheaper: Including him/her in the 189 visa costs
880AUD versus
2370AUD for a
child visa (subclass 101). Source:
Visa Fees and Charges. Moreover, even if your kid is listed as a non-migrating dependent, s/he has to go through medicals. Since they are only valid for a year, s/he may have to get them done again for the child visa, thus paying twice for it.
The second downside of applying for a child visa later is the processing time. For applicants from high-risk countries the projected processing time for a child visa lodged outside Australia is
14 months! So I would definitely recommend to include him/her now, get the validation trip done and if necessary your child can return to India after that until you are settled in Australia.