2 months plus sleeping through the night

few weeks before, my LO average intake of milk is below average of what she should drink. I was super worried and been asking around even ask the nurse when we went for immunisation. then they told me was if your baby weight is gaining and not losing its ok because they know when they are full. for 2 months baby they will still sleep/nap alot. What i did was give my baby tummy time for awhile and let her watch tv w me 🤣 until she fall asleep or tired. I wont straight put her in to rocker to make her sleep