Aussie Expat CGT

I'm over 50 and considering living in Thailand. I own an apartment in Sydney Australia and will rent it out for income while I'm gone.  The rules about capital gains tax in Australia state that if you move back in or sell within 6 years you still get the full CGT exemption. However, I spoke with an “expat tax expert” and he told me that I should move every few months so that it's clear that I'm travelling and have not moved to a new country or the ATO may decide that I am no longer a tax resident and if I sell at some point in the future I will be charged CGT.  So I'm just wondering if there are any other Aussie ex pats out there with any knowledge and or experience regarding this. Do I really need to keep on moving every few months to avoid CGT?