The 34-year-old mum, who gave birth to her second child Honey in September 2015, admitted juggling two children with her new TV project has been tough.
"It's hard because I've still got my baby with me at work quite a lot because I'm breastfeeding," she said.
"I'm trying to do the mum thing and film - it's a bit of plate-spinning act."
The former radio presenter, whose new TV project with Gok Wan 'Fearne & Gok: Off The Rails' starts today (21 January), said although she was sleep deprived, she was still "very happy".
When asked how she's finding life with a toddler and a baby, she replied: "Well, I'm not sleeping at all really.
"I'm just drinking loads of coffee and getting on with it."
Cotton, who is also mum to two-year-old Rex with husband Jesse Woods, has so far only shared photos of Honey's feet.
She does however post photos that give an insight into her family life on Instagram.
Most recently, she has shared photos while doing yoga with Honey watching, as well as when she was making a banana loaf with both her kids.