Why can't my baby sleep through the night even after weaning?

After weaning, babies may experience certain changes that affect their sleep. Weaning can lead to reduced nutrient intake, potentially causing malnutrition. It may also impact the baby's physiological functions, making them more susceptible to external stimuli. Additionally, weaning can cause emotional fluctuations and mood instability. It is recommended that after weaning, parents provide babies with sufficient nutrition, ensure the quality of their dietary intake, maintain a quiet environment, and help establish healthy sleep routines.