So far we've had 5 weeks in each placement area. I had 15 weeks so far of community, but at the end of 5 weeks I've moved to a different community team. Those in my cohort who have had a DS placement earlier in the course are currently on a 10 week community or PN ward placement, because I have not had DS placement yet this placement was split for me into 5 on comm and 5 on DS.
Our uni is a pain in the arse though, they rotate us between different trusts and teams, so each placement we are on we get a different mentor each time. I have found it is not great for continuity for us, because one mentor on comm will let me do so much and another will start me from scratch and won't let me do anywhere near as much as what I did before, so I don't gain the confidence. Partly my fault though as I think I need to push myself a bit more, and just say 'well actually, I can do that', but sometimes it is nice to step back and just watch.