I understand your nervousness, I was too even though I had had 2 previous VBs.
I put it down to the 'special treatment' that VBACs get - the monitoring etc.
Keep telling yourself there is no reason to worry! Your last baby was breech - there's no reason you can't do this. It would ben just like any other first labour, with a little extra monitoring

I was put on the monitor as soon as I got into the labour ward. I asked the middy about being able to move around etc & she said 'let's just see what this trace says first'.

In the end I sat on the bed for the entire labour, but not because it was a VBAC but because bub was very high still, I was 9cm dilated & my waters hadn't roken, she was worried about cord prolapse if I moved around & my waters broke before bub engaged.

Apart from being stuck on the bed, it was fine different from my other VBs but also just the same if that makes sense.

Good luck