Kind of depends. Plenty of people COULD live like a monk and save a ton over 6 years. But that requires not having a family and likely not enjoying your life very much. I probably COULD live on significantly less than I make right now. Hell, I have in the past.

But I sure didnt enjoy it very much.

But if you lived on rice and beans in the cheapest place you could find while making a 6 figure salary... Saving a very significant sum every year would be possible.