I recommend

I recommend the work buddy system.  Here's how it works. You meet once a week, in person or by Skype, and talk for an hour, 25 minutes about each of your projects, with 10 minutes for small talk and hellos and goodbyes at the beginning and end, and a bit of spill over.  It is egalitarian, with both parties getting equal time, so there is no exploitation involved.  If it doesn't work for both people, then it won't work. Nobody should feel they are giving more than they are getting. The focus should be on the ideas themselves, and secondarily about secondary issues. It is not about how many hours or words you have written, but about intellectual content.