Vbac help

Malena • Mom of 2 girls and one boy and another on the way in avgust

Hi ladys, did any of u have a vbac after a c-section and a baby was bigger than 8ib . My baby is measuring biger than my another 3 babys so i am wondering is it risky to have a vbac for the first time and baby is measuring bigger. Ps : my first two i had natural and a last was c-section during the breach position. Thanks !