I've learnt my lesson, no more big xp projects that require lots of doffs. We seem better at doing small provisioning projects that don't require doffs. They give less xp but we can do them at a much faster rate.
I've been hitting the Doffgrinder, but I never seem to get medical staff from the Science Cadre mission.
TBH, wasn't sure if we were just holding off on the current projects until S7 hits.
Have you tried buying doffs from the fleet vendor? Medical are rare, but i would say on average every 4th-5th doff is a medical one if you go for the slightly more expensive science doff packs...