I think you made the right choice but 3 thoughts I wanted to add:
1) They hired you because they like you and your thinking but that does not mean they trust you yet. That will take time.
2) You are comfortable with your old method of working; this is new to you. That does not mean it's bad it's just different. Commit yourself to it and then once you understand it then you can break it down and judge it to see if it works for you.
3) In any situation like this down the line, I think it's best for you to stand up and have the hard discussion with your leaders and tell them how you are feeling and try to resolve it before just bailing. You're not helping them or yourself by being one foot out the door; you're not building resolve.
I think you made the right choice but 3 thoughts I wanted to add:
1) They hired you because they like you and your thinking but that does not mean they trust you yet. That will take time.
2) You are comfortable with your old method of working; this is new to you. That does not mean it's bad it's just different. Commit yourself to it and then once you understand it then you can break it down and judge it to see if it works for you.
3) In any situation like this down the line, I think it's best for you to stand up and have the hard discussion with your leaders and tell them how you are feeling and try to resolve it before just bailing. You're not helping them or yourself by being one foot out the door; you're not building resolve.