It is not recommended to take melatonin while breastfeeding, as there is not enough information on its impact on the baby. Instead, try non-pharmacological methods to improve your sleep, such as avoiding technology before bedtime, maintaining a consistent sleep schedule, keeping your bedroom dark and quiet, getting fresh air and sunlight during the day, avoiding naps and caffeine, practicing relaxation techniques, and addressing any underlying causes of insomnia. Additional resources on insomnia and sleep hygiene may also be helpful.