Some people only knew you when you were quieter, when you didn’t say no, or agreed to everything and kept the peace even when it cost you. Now that you’re more protective of your time, more honest and willing to ask questions, they don’t know how to respond. You refusing to shrink anymore to accommodate others, does not make you rude or inconsiderate. This is not your problem to fix.
No one is supposed to stay stuck in a version of themselves just to keep everyone else comfortable. If someone really values you, they will adjust. They will see that your growth came from being tired of how you were being treated and from choosing yourself in situations where you used to choose everyone else first. So if they’re uncomfortable with that, let them be. It’s not your job to shrink again.