“Do I really need to have a mock?”
I get this question from nervous PhD candidates. They’re nervous about the actual viva and that carries through to any idea of a rehearsal. They’ve heard of mocks and all they can think is that it is one more thing to worry about.
No-one needs a mock viva in the way they need oxygen. You can get by without it. But there are good reasons to have one.
A mock viva can help bring a little confidence through practise. It’ll never be the same as the real one, but it allows you to be in a similar sort of space. Your supervisor might offer, but you should feel alright about asking. It’s a reasonable request to make. You’ll need to give a little notice to set it up, but it shouldn’t be a problem. Afterwards you’ll probably have some questions and answers to reflect on, but you’ll have a little more comfort for being in your real viva.
One viva is enough – but the mock isn’t a second viva. It’s a rehearsal, a practice, a sort-of-but-not-really-viva. Make the most of the opportunity if you have one.