It is normal for babies to have varying feeding patterns and intervals, so the duration between feedings can differ from one day to another. However, if your baby is not gaining weight as expected and you are worried about her milk intake, it is important to consult with a healthcare professional or lactation consultant. They can assess your baby's latch and feeding technique to ensure she is effectively extracting milk. They may also check for any underlying issues that could affect her ability to gain weight. Remember that every baby is different, and some may need more frequent feedings than others. Trust your instincts but seek professional guidance when needed to ensure your baby's well-being.