Hi, we've done it for three nights now. The first she cried for 50 mins, then 35, then 10! She woke for two feeds but stayed in cot all night. For us, this is amazing!! I have slept on a mattress next to her cot, and will slowly move away. I'm hoping this is the start of better sleep as I also hit a wall after 9 months of uncomfortable sleep and feeling like a zombie!!