It is not safe or recommended to apply neem oil to stop breastfeeding your 17-month-old baby. Neem oil can cause serious harm if ingested or absorbed by young children, including vomiting, seizures, coma, and even death in severe cases. Avoid neem oil for stopping breastfeeding—it is unsafe and can be toxic. Use slow, gradual weaning techniques with patience and care. Consult me for personalized weaning advice and support if needed. Contact me on whatsapp eight four nine six zero five nine five six five .