It's so hard to know what to do re sleeping. I'm not a big believer in tired signs as I don't think my two had any tired signs apart from getting grizzly when they were that young. i've found that whenever I tried to put my DD down before she was tired it was a struggle to get her to sleep. Someone gave me some good advice, if you're not having success with getting them to sleep after 20minutes, then get them up and try again in a bit. I've tried this and it seems to have worked. Sometimes they just don't want to sleep and will only sleep while you cuddle them. This isn't the end of the world as long as it's not every time they want to sleep. Skye is now 12 weeks old and she still only stays awake for about 1.5 hours. She doesn't stay awake for more than 2 hours before getting grizzly (which is the only recognisable tired sign still!). Go by your instincts and what you think she is trying to tell you. You do know best ;-)