I have a low viscosity epoxy + hardener with a 150-minute pot life. However, the epoxy that's mixed in a cup starts warming up in 30 minutes and hardens in one hour while producing a lot of heat. The epoxy that's infused in the part hardens in a few hours which is correct. This is not an issue for small projects where the epoxy is infused in less than an hour, but I am worried what if the infusion process takes longer. How do you deal with this issue - the epoxy warming up in the cup which results in a much shorter pot life than stated?

A good idea to tilt your existing pot, as when pouring a beer, to limit the unwanted air introduced but be mindful of not exposing the feed line.