January Jones feels blessed to have a "baby nurse."

The 34-year-old Mad Men actress is single mother to her seven-month-old son Xander Dane.

January has a very busy professional schedule and returned to filming almost immediately after giving birth.

The crew provided a special room for January, her baby and the family's caregiver and the actress thoroughly appreciates the gesture.

"I think I went back to set six or seven weeks after, so he was really little," January told People magazine. "I had the baby and the baby nurse in their own room so I could go back and feed him every two hours."

"If I felt like he needed me, or if he needed to eat, or even if I just needed a squeeze because I was having separation issues, I would go back and see him. It was such a blessing that I wasn't separated from him."

January found the most difficult part about working and tending to an infant to be a profound lack of sleep.

"It was hard to work long days and then go home and not sleep," she explained. "It's getting harder, not easier, so I'm a little concerned!"

January's family caregiver has ensured that the actress find the nourishment she needs to remain vigorous on the go.

"I have a great doula who makes sure I'm eating well, with vitamins and teas, and with placenta capsulation. Your placenta gets dehydrated and made into vitamins," she detailed. "It's something I was very hesitant about, but we're the only mammals who don't ingest our own placentas. It's not witch-crafty or anything! I suggest it to all moms!"

The fifth season of Mad Men premieres Sunday March 25 in the US.