gender identify and name change questions

Hi all! I’m 23 and I use they/she pronouns. My gender feels femme but outside of the binary. Femme nonbinary???

I am debating changing my name from my VERY feminine given name to a more neutral name - August. I feel more comfortable using a different name and I feel less anxious introducing myself and okay using the she in my they/she pronouns. I’m worried transitioning to a new name. For anyone who has changed their name - how was the adjustment period with family and friends - and with yourself??? And how do I explain and describe the name change for family and friends?

Also! How do you know if you’ve chosen the right name?