Around the fourth month (ie around 16 weeks of age – the biological age counted from the estimated date of childbirth), the circadian rhythm begins to form. This is one of the first milestones in the development of baby’s sleep.
During this period, the first regular snooze occurs – morning nap, which has a regenerating function for the mind. The second nap, physically regenerates, consolidates later than the first nap. The daylight saving time is gradually increasing. At this age babies function well with an activity time of 1.5-2 hours. Parents of 4-month-old infants recommend that snooze times be set according to waking times, while taking into account what time it is. It is also worth watching the baby carefully to see when and what signals sent us that he is ready to sleep.
The morning wake time, according to the biological clock of 4-month-old babies (and not necessarily the parents’ preference) is 5:30 am to 7 am. In order not to encourage the baby to wake up early in the morning, the first morning feeding should take 10-15 minutes after waking, ie after a short time.
Infants who start the day very early, between 5:30 and 6am, so-called. “Early Birds” will be ready to start their first nap at 8am. It is important, however, that the first nap will not start earlier than 8 because it would cause the whole day schedule to shift too early. Gradually (with baby’s readiness for longer standby time), we shift the first nap at 8:15, then 8:30, 9:00 am after the end of your baby 6 months.
After the fourth month of life, our goal is to have the second nap start as close to 12:00 as possible. However, for morning birds or infants who sleep for the first hour or less, sleeping up to 12 may prove too challenging. In this case, I recommend that you take a second nap earlier, at 11:30. With the time when we will gradually delay the first nap time, the second nap will also move to 12: 00-12: 30.
Third nap, so called. “Cat nap”
This nap has no physiological function, and serves as a bridge between the second nap and nighttime sleep. It should start about two hours after the previous snooze. As the name implies, “cat nap” is shorter than the two previous naps and should last no longer than an hour. To avoid problems falling asleep overnight and to protect nighttime sleep, the third nap should end at 5:30 pm.
Time to start sleeping in the evening
It is best to start the evening after 2 hours after the end of the third nap, or 3.5 to 4 hours after the end of the second nap, if the third nap is not taken.
Sample day plan for a 4 month old baby who is an “early bird”:
5:30 pm – wake up
08:00 – 09:30 – And nap
11:30 – 13:00 – II nap
15:00 – 16:00 – III nap
18:00 – start of night sleep
For a 4-month-old baby waking up around 06:30 / 07/00, a sample day plan might look like this:
06:30 – 07:00 – wake up
08:30 – 10:00 – And nap
12:00 – 13:30 – II nap
15:30 – 16:30 – III nap
18:30 – start of night sleep