Talk to Gynecologist on Vbac Supporter

Hi experienced moms, is there any doctor in Karachi who can take my case for VBAC. I have had 2 c sections. The gap after the first child was 3.5 years and 5 years after 2nd child. My doctor says if you come after 20 years, there is not possibility of VBAC while everything looks good so far on my end. Even the scar thickness is more than 5 mm now. I'm worried and looking if there is anyway I can get VBAC.