There are no shortcuts to being ready for the viva. You can’t cheat your way to being prepared, but you can follow the example of others. The work could be tricky at times, but viva preparation is – in most regards – a solved problem.
You need to read your thesis. You need to mark it up to help you, and create summaries that help you unpick and capture what you’ve done. You need to know broadly what to expect. You need to get some practise for the event itself. You need to have a sense of self-confidence.
There are no shortcuts for these, but there are efficient paths: steps you can take that will help get the necessary work done. Talk to colleagues, read back through this blog, get a sense of what actions help – and think about how you can apply all of this to your situation.
Then take the first step along a path to being ready.