Tailor Bird Nest - Early morning disaster | Miscellaneous | Hydroponics farming in India

Hello All,

Last weekend I had noticed an empty Tailor Bird nest. As I was plucking some brinjals this morning I cut the leaf out of which the nest was made. I realized to my horror that it had three tiny eggs in it. I could hear the mother/father bird making noises at the time of cutting the leaf. I have since taped the nest back to the brinjal plant but I see no sign of the mother/father bird. My kids want me to get the nest home and help it hatch. Couple of questions though:

1) How long should I wait for the mother to come back to the nest before the eggs spoil. A little googling says that eggs hatch in 12 days.

2) If the mother does not come back to the nest is there a way to artificially incubate them?

Below is the pictures of the nest - after it was cut off the plant.