HELP - Dummy keeps on falling out!

[meiko]

I have 13 week old twins. One of them is totally dependant on his dummy. He goes to slepp at 8pm and falls asleep fine. If dummy falls out he keeps sleeping. He then wakes around 2.30am and for rest of night keeps dropping dummy out every 10 or 20 mins and crying. What should I do - think i am going to crack up!!

I just tied it to one corner (or one at each corner!) and he always managed to find it OK in the night.

Thanks will give both ideas a go and see which one works for dd