It is important to monitor the frequency of bowel movements in infants, especially those who are exclusively breastfed. A lack of bowel movements for more than 7 days can be a sign of constipation and may require medical attention. It is recommended to ensure that the infant is drinking enough breastmilk, as increasing fluid intake can help alleviate constipation. If you have any concerns about your child's bowel movements, it is best to consult with a healthcare professional for further guidance.