3/5 engaged is down there all right I know the pains you're talking about. But DS3 was 3/5 engaged, then he'd pop himself up a bit, then down he was like a yoyo But you still could go any time.
Hmmm...well sex is usually helpful, but in my experience the more you want it to happen ASAP the less likely it is, murphy's law you know. Maybe you should try planing a trip or dinner party, bub would surely make an early appearance then to muck up your plans
I've heard a good curry can help, or chilli, nipple stimulation...I can't think of anymore at the moment.

hope you get it going soon