Are these shipped eggs? They tend to need a bit more TLC ... There's also a thread about hatching shipped eggs you should read, think Hatching 101 by Sally Sunshine hits on the topic. Good Luck
You'll need to candle them at day 7, 14, 18/lockdown. Have you read the Hatching 101 article/thread by Sally Sunshine in the Incubating and Hatching Chicks? Very informative & helpful. Enjoy your time with your Grandson, hope he'll be there for the hatch (est 21 days)
What incubator do you have? The chick should stay in the incubator to dry, once all hatch they move to the brooder. Have you put eggs in yet? If not maybe you should put 2 - 3?