Sleeping schedule help

My baby will be 9 months tomorrow and he’s on my husbands work schedule. At night my son goes to sleep around 8/9, wakes up about an hour later, eats, and stays up for about another hour and goes back to sleep. My husband wakes up at 2 am to be clocked into work at 3. And my baby is waking up with him and not going back to sleep until about 3 hours later. What can I do to help change this?