which vaccinations

I spoke with my pediatrician about vaccines which we've been spacing. So my 6 month old is still finishing the 4 month vac schedule. Last time I opted out of the hep a and polio because research and my dr confirmed the hep a is passed through sex (apparently the gov doesn't trust mothers not to have unprotected sex whilst pregnant) and polio traveling to affected countries etc so they don't seem necessary yet. Anyone else spacing/opting out of some?