Los Angeles, Feb 23 : Singer Hilary Duff says it is difficult to stay away from her 11-month-old son Luca when she is working.

The 25-year-old became a mother in March 2012, and realised how tough it was to be away from her baby while she was shooting a spot for comedy show "Raising Hope".

"It's hard to be away (from Luca). I did a guest spot on 'Raising Hope' (and) I was so happy to be on a set again... but it was hard. I also had a day of (thinking) 'I need to get home. What am I doing away from my baby?," Life and Style magazine quoted Duff as saying.

Duff took some time before joining back work post pregnancy.

"It's such an adjustment. It's a huge change and it took a few months for me to be like, 'OK, this is me now, this is who I am now, this is how I do things now," she said.

Duff is married to ice hockey player Mike Comrie.(IANS)