Nighttime potty training can be a difficult process for parents and children alike. If you're struggling to help your son stay dry through the night, there are several effective strategies you can try. First, make sure he understands the importance of using the bathroom before bed and limiting his fluid intake before bedtime. Consider using a bedwetting alarm or rewarding him for dry nights. Additionally, creating a consistent bedtime routine and providing comfort items like a nightlight or stuffed animal can help him feel more secure and confident. With patience and persistence, you can help your son achieve nighttime potty training success.