Want to send my son for higher studies in Australia, what should I do?

Hi, My name is Sunish and I have been investing for many years now. I know I have bought enough real estate to fund whatever I want to fund in my life but I have to send my child to Australia for further studies next year and I don’t know whether I should sell my property to fund his education or not. As real estate market is down I might not get the right valuation of my property, should I sell my property.