Membrane sweep at 37 weeks

So I have to Have a scheduled repeat C section at 38 weeks exactly . It’s already scheduled . My ob said today if I go into labor “naturally” I can have a vbac . He said if I wanted he would do a membrane sweep at 37 weeks to try to help me go into labor on my own . They will not induce me with medication due to risks . And I can’t go past 38 weeks so if I don’t go into labor I have to have a repeat c section at 38 weeks exactly . My question is , has anyone had a membrane sweep at 37 weeks and it work ?