If he was birthed posterior than yes that can definately be a reason for tearing as a large proportion of head is being birthed. So positioning again is a big thing in terms of reducing tearing and promoting OFP.

You can also use oil as baby is crowning.

Since I started Mid, I've noticed the biggest thing which saves women from tearing is the Midwife. She is in a position to judge whether you are looking like tearing or not and can guide you on when and when not to push.

Incorporate talking your worries with the hospital/your midwife into your planning