Girls, I have a question. My daughter sleeps well at night in her cri…

Girls, I have a question. My daughter sleeps well at night in her crib alone in her room from 9 PM to 6 AM. But during the day she's not ready to sleep in her crib. I put her down on a cot and every 15 minutes she wakes up, sometimes even right away wants to sleep on her arms. Is this normal if I hold her on her arms for two hours? What if it affects her nighttime sleep... what should I do?