DS needs a dummy to sleep as well. We put about 6 dummies in the cot with him at night, so he can usually find one when he needs it. He does tend to have fun throwing them out of the cot when he first goes to bed, so once he's asleep we usually sneak in and put them all back.

He can pretty much get one in his sleep now, its quite impressive actually. We very rarely need to get up for his dummy now.