Who’s successfully moved up bedtime?

Ly

I’ve tried so hard, so many times for over a month now to move bedtime up. Currently it’s at 10:30pm. If I move it up even 10 minutes he will fight sleep those extra 10 minutes until he makes it to 10:30. I’ve tried adjusting wake times. I’ve tried simply just cold-turkey changing it to 9. And it’s a fight. But if I wait until 10:30 to put him down it goes smoothly & quickly. Anything earlier and it’s a fight up until 10:30. I need advice. I would prefer an 8:30 or 9 bedtime😰