How is it like to move and live in Japan as a foreigner who married a Japanese?

I have lived in Australia for 15 years and now an Australian citizen. My Japanese husband whom i met here and married for 6 years want to move back to Japan. Of course he would like to bring me and my son (2yo) there simple because he wants our son to have a better education and learn the culture etc. We plan to move back The problem is I do not speak Japanese at all but plan to go to a language school to seriously study the language and the culture while i’m there. Will I be able to survive?

I plan to only go back to work after i am a little more fluent with the language. In Australia, I work in a University as an academic and researcher.