If you're considering cry it out sleep training for your baby, you may be wondering how long it takes to see results. Many parents report success within a few nights, while for others it can take up to two weeks to see improvements. Consistency is key when it comes to cry it out sleep training, so it's important to stick to a routine and remain patient. Remember that every baby is different and some may take longer to adjust to the new sleep habits. Overall, while it may be tough to hear your baby cry, cry it out sleep training can be a effective method for establishing healthy sleep habits.