I'm in a relationship and trying to juggle my girlfriend and my daughter. We live in the same town and I only have my daughter 4 days every two weeks, but it's still wearing. The longer I am juggling things the harder it gets.

If he is quitting his 20 hour a week job that might ease up on his stress, and when his son gets to summer break things might ease up a bit too.

If you love him give him some time to work out his life.

And on a side note, I noticed you are in Wyoming, that is where I'm originally from, really miss the mountains.