ok how do I un zip lol
Rather than me typing it all out have a read of this ~ https://www.backyardchickens.com/articles/step-by-step-guide-to-assisted-hatching.64660/
For me I'm not a helper and let nature take its course but these are your eggs and only you can make the decision on helping or not. Before doing anything though I would gently tap the egg and see if the duckling moves at all.