At the start of a PhD, seeds are planted. Ideas. Questions are asked. It takes time to see these seeds grow, flower, bear fruit.
Some won’t make it. Hunches and ideas don’t always lead to what you think. Some seeds are planted late in the season and still lead to something valuable.
As you get ready for your viva, think about the seeds of your research and the fruit. What seeds did you plant? How did they grow? What fruit did you harvest?