No, on Judgment Day, God will be saying “I told you it was this, why did you not believe me? Did you believe me when I promised you salvation or was that just another fairytale too?”
All or nothing.
I read the Bible too. Don’t get paranoid about getting a multiple choice question wrong on the final. Saved people can disagree and do on interpretation. They remain saved. Stop being paranoid. God didn’t set anyone up to fail. Jesus told us what is important.
We’re all going to be AMAZED at who is there at Heaven’s reception center. There will be a whole lot of “YOU got in too????” Our pea brains miss a lot of important things while we focus on minutiae.