Theoretically, the curve is supposed to flatten over time.
Here's an option:
One way to help flatten the curve is to deliberately "feed the curve", that is to intentionally feed about +3, possibly with a teaspoon or two of medium carb food, so it reduces the drop. It may result in a slightly higher insulin dose to accommodate the calories. The idea is to keep the drop from being so fast and/or going so low with respect to the preshot, that it doesn't trigger compensatory hormones and release stored glucose (glycogen), ie bounce.
Of course, this may or may not work with your schedule. You could try it out on a cycle you were home to see what happens.