The Hollywood legend, 56, told People magazine how he misses his bright blue-eyed son if he’s away from him for even an hour.
'He's been great,” he said. “One night, he actually slept seven hours – which is unbelievable!'
The Grease star lives in Ocala, Florida, with his wife Kelly Preston and their 10-year-old daughter Ella.
He was away from home at a New York event on Thursday night, where he spoke to the magazine.
'I'll be gone exactly 24 hours, and I miss him already,' he added.
After enduring the tragedy of losing son Jett in 2009, Travolta says he is again enjoying the simple pleasures of fatherhood.
'I love holding him and feeding him,' he says of seven-week-old Ben. “He looks like me!
'My time is bottle time or when he's contented and ready to be walked around and held or taken for a walk.'
He added: 'Otherwise, he's on mum's breast. So I have to be on call… hop in when it's my turn.'