1. Night-time sleep: Babies at this age may sleep for around 10 to 12 hours during the night. They may start developing more predictable sleep patterns and may sleep for longer stretches at a time, with fewer night-time feedings. However, some babies may still wake up once or twice during the night for feeding or comfort.

2. Daytime naps: A five-month-old baby typically has three naps during the day, totalling around 3 to 5 hours of daytime sleep. These naps may vary in length and can be around 30 minutes to 2 hours each.

3. Sleep routine: Establishing a consistent sleep routine can be beneficial for your baby’s sleep. This may include activities like a warm bath, gentle massage, reading a book, or singing a lullaby before placing them in their crib while drowsy but still awake.

4. Sleep environment: Create a comfortable sleep environment for your baby. Ensure the room is dimly lit, quiet, and at a comfortable temperature. Many babies find white noise machines or soft lullabies soothing. Consider using a firm mattress and avoiding loose bedding or pillows to reduce the risk of suffocation.

5. Sleep associations: At this age, babies may start developing sleep associations. If your baby relies on certain conditions (such as rocking, nursing, or being held) to fall asleep, they may need those same conditions to fall back asleep when they wake up during the night. It can be helpful to encourage your baby to learn how to self-soothe and fall asleep independently.