DD takes a 2-3 hour nap on a floor mat every day at daycare. At home in her crib she'll only nap 40-90 minutes then wake up screaming. Today she woke after 40 minutes and wouldn't go back down, but when we came downstairs she immediately laid down on the living room floor and passed out.

Has anyone tried mat/floor naps at home? Did it work? I'm afraid she won't understand it's nap time if we don't put her in the crib.