London, June 15 (IANS) Oscar winning Sandra Bullock has revealed that she has been surviving on three hours of sleep since she took custody of her adopted son Louis.

‘I have been surprised by the fact that I really need three hours of sleep. I have learned that a little person screaming at the top of his lungs can mean six things and I will figure out which one it is and fix it,’ dailymail.co.uk quoted her as saying.

‘I don’t want anyone else to have the pleasure of changing diapers, but me.’

Bullock and her estranged husband Jesse James secretly adopted the baby from New Orleans, US, in January. But the pair split in March and now she is taking care of her son.

The 45-year-old was spotted keeping her tired eyes hidden behind dark glasses as she stepped out in Austin, Texas Monday.