You have 2 hours to mix a one hour show? Not much time to do anything either than something brute and/or automatic.
The choice of omni-directional lavs is pretty common, it is less common to have cardioid lavs. And with them 3 feet apart probably wouldn't make much difference.
Andrew's idea about a downward expander is a good one, though again, with them 3 feet from each other, you may have a difficult time setting a threshold that is meaningful.
You can try the Time Align plugin if you are in Pro Tools. There must be something similar in other DAW's. Or slide the stuff manually.
Or, for phasing -- which is where certain frequencies (not all) are not aligned (but others are) and different from time alignment -- you can try the UA Little Labs IBP. Little Labs® IBP Phase Alignment Tool Plug-In | Universal Audio
2 hours won't give you much time to dial in anything, but maybe you can deal with the worst offenders.