So my consumer uses 3 api endpoint from 2 services. If I follow the V3 setup i have 2 pact providers setup for each api. Is there a v3 equivalent to provider.setup() as opposed to having to nest provider.executeTest calls?

You should avoid having multiple providers per test, unless you really need to. Take the mindset of a unit test here, and that should get you fair way to making the tests a lot cleaner.