DH has been doing 2 units by correspondence the whole time he's been a SAHD.

He can do readings and work on essays while DS is asleep (and this was much easier at the start, when DS slept more!) and at night, after DS has gone to bed.

And I make sure I help out extra with DS and around the house - or take DS out more often - when DH has exams, or the last cruch before essarys are due.

DS is great on a routine, and is a really good sleeper (most of the time!) so DH has found it incredibly do-able.

But if DS wasn't such a good sleeper, it would all probably need to be done in the evenings or on weekends, which might end up meaning DH and I wouldn't get much time alone together.

HTH