Colic usually starts a few weeks after birth and often improves by age 3 months. By ages 4 to 5 months, the majority of babies with colic have improved.
Unfortunately, there are no proven treatments that consistently help every baby.

It depends on the cause of the cry in sleep. Do your own investigations first and if you can't figure out the reason for PERSISTENT cry in sleep not occasional ones, then see a doctor also make sure that baby does not cry for long during the day before you attend to him/her.

It depends on the cause of the cry in sleep. Do your own investigations first and if you can't figure out the reason for PERSISTENT cry in sleep not occasional ones, then see a doctor also make sure that baby does not cry for long during the day before you attend to him/her.