"Relapse sleep at 4 months old" - why does it happen? There are some big changes happening:
1. They have become more aware. And it's very interesting! Your baby will now notice more easily when you go by his side or notice interesting things around the room. And now the shadow on the wall became a massive stimulus to him
2. Developmental milestones that affect sleep (such as rolling over) commonly occur at this age. So you have to increase the practice of rolling and training during the day
3- Between 3-5 months, babies switch from a 2-stage sleep cycle to a 4-stage NREM sleep cycle. Now they spend more time in a light sleep and can be woken up more easily from the newborn stage!
In this period, things become more difficult for the people, as the supports that used to work in the past are now required with
Every awakening or even one prop is no longer enough (i.e. if the child needs to be rocked to fall asleep, he will wake up more frequently to request rocking to get back to sleep)
If you are currently struggling with this stage, sleep training or sleep counseling can help you reduce the severity of it
Remember, not every child experiences a sleep relapse at this time. So, don't stress about it in anticipation! The best way to avoid or reduce them is to keep your bedtimes consistent with what you were doing before the relapse when your child was sleeping well, as well as practice sleeping as independently and consistently as possible!