Sounds like only one of the females spawned, so worth trying again. I'd say your breeding effort was actually a success (it's the harder part), but your egg and tadpole rearing were not.
Firstly lose the plastic plants. Red Eyes should have real plants at all times, but especially when breeding. Artificial ones just take up valuable room and shouldn't be used at all whether attempting to breed or not.
Secondly, don't used distilled water. They need either treated tap water or safe rain water, this is most likely why the tadpoles didn't survive.
Lastly, as soon as the spawn has appeared, cut the leaves off as you did and suspend them over the water you intend to rear the tadpoles in straight away. Use an aquarium with about 3 inches of treated, heated water and suspend the leaves over it using a piece of pipe or something similar, then cover the aquarium with a piece of glass. This will ensure that there will be 100% humidity and the eggs won't dry out. If the room is not too warm use a heatmat attached to side of the glass too to make sure they don't get cold (use a thermometer in both the water and air to monitor). They all develop at the same rate and start dropping into the water after a week.