I thought I'd post the last three weeks of my training here, which were much lower in mileage than last year's because of just being tired from pregnancy. But I still pulled off the race, not very fast, but I did it and I wasn't tired at all, so I'm happy with that.
Note: I'm not recommending my training (or lack thereof) as a model for anyone else's half training. It wasn't enough to actually race a race or expect a PR. But for me at least, it was enough to run it comfortably and not struggle or be tired.
Week 1: Run 15.82, Elliptical 3, Walk 1.33
Week 2: Run 8.48, Walk 1.39, 2 core/strength workouts
Week 3: Run 16.14 (HM), 1 core/strength workout
Subtotal: 40.44 (running), 46.16 (running + elliptical + walking)