Dh is great with C in terms of playing with her, but he never watches for tired signs or keeps an eye on the clock to know that she's getting tired. I get tired of being the nap police, and I've explained that a soon as she looks at all tired or between 60-90 minutes, we should start putting her down. He never is the one the watch for it or suggest it. If he is sitting holding her and she's fussy, it's always "Do you think she's hungry?" I have explained she isn't always hungry, but sometimes you need to stand up and entertain her, and sometimes she's tired.
I'm still nursing to sleep for most naps so to be fair, I am the one that has to deal with it, but it would be nice if he would think about it too. That's all.