Yeah for a pip! 
Keep the humidity up now, anywhere from 65-75% is fine, just NO condensation or dripping.
Now mark the time down. Ducks take for-e-ver! Could be any time between now and 40+ more hours before it fully hatches! It will likely pip again (maybe even 2-3 times) but should then start zipping.

Keep the humidity up now, anywhere from 65-75% is fine, just NO condensation or dripping.
Now mark the time down. Ducks take for-e-ver! Could be any time between now and 40+ more hours before it fully hatches! It will likely pip again (maybe even 2-3 times) but should then start zipping.