I have been removing my cup with using one finger because I can't squeeze two fingers inside. It's somewhat difficult to remove the cup with just one finger. Usually, I press on the side of the cup (toward the top part, but finger not long enough to reach the rim. Sometime it works just with one try. But, most of the time, the cup just slip away and reseal again. So, I was wondering if anyone knows a good way for removal with just one finger?