VBAC after 2 C-sections?

What are your thoughts I'm not pregnant currently as I just had my son in April c-section again (because of my son's conditions they wouldn't risk it and something happen to him which I agreed with them) but hoping for a vbac next time my obgyn said I still have a chance to have one next time but she couldn't say that I could definitely but looks to be that I could and also she told me that my uterus is thin and want to do some testing to know why which I have yet to decide whether to do it or not

I have a lowercase T on me so I have a vertical and transverse scar

My high risk doctor when I was pregnant told me he didn't see my scar on my uterus from my first c-section on ultrasound like it just disappeared and even during my second c-section again they didn't see it it's gone

My second c-section they did a transverse since this time around it wasn't an emergency one like it was with my first born

Opinions please I really wanna know yalls thoughts