Had name changed in 2019, around age 22. Just filled out a form, paid the fee, had to go to court after it was processed where a judge just asked me the same questions on the form (are you doing this to avoid debts, etc) and confirm the name was right. I think it all happened within the span of 2 weeks, but this was pre-COVID so I don't know if things are slower now.

Allegedly you had to have it run in the paper for a couple weeks, but I don't know if I was supposed to submit this or they were, but I wasn't involved with it, so I don't know if it actually happened. If you're doing the name change to avoid an abusive situation, the form says they can waive this part.