How to start calling my parents ‘Dad/Mum’ instead of ‘Daddy/Mummy’?

All my life I’ve called my father Daddy, and my mother Mummy. I believe that I am at the age where it’s time to transition to using Mum / Dad.

The problem is I think it will be awkward, how should I do it? Any advice? Idk what to do

(And please don’t say smth like “oh don’t do that don’t conform to societal pressures” I’ve briefly looked it up but I couldn’t find many answers, and most were this. I’ve made up my mind, I’m asking for advice on how to get there)

If anybody sees this and responds, thank you for your time.

Anyway, have a good day!