Better sleep. Help her for better sleep?

My girl baby is 82 days old. Even though she takes full breastfed milk (I make sure she gets enough milk and her stomach is full), she sleeps very less. During daytime she sleeps a maximum of half an hour (3 or 2naps) and wakes up suddenly searching for me. She always wants to be on my nipple. Most of the time, she will be so sleepy that her eyes are tired and pinkish, even then she refuses to sleep without sucking my breast. If I take away my nipple or If I move away, she will wake up. I am worried about her clingy behaviour. During nighttime, she sleeps better, but still she wants to be on my breast sometimes. One person suggested skin to skin will help to help my baby sleep better and be comfortable. Can someone please help me how to help her for better sleep??