Sleep training is not for the faint of heart.
There is science to sleep.
One of the sleep training methods that gathers a significant amount of controvery is the "Cry It Out Method" or the "Ferber Method."
Like any parenting style in general, there's pros and cons involved.
Once your baby gets past the first few days, they will usually sleep through the night longer and bedtime will be a more predictable experience. The turn over is relatively quick and your baby will learn to relax and comfort themselves within a few days. Ferberizing still keeps your baby attuned to the presence of parents, while still encouraging them to self soothe. This stops bad sleep habits in their tracks and can convert the fussiest sleeper to a baby that sleeps like an angel throughout the night.
Both methods get a notoriously bad rep for coming across as cruel or cold on the parents' end. It's a difficult process and can be emotionally trying on parents as they're forced to listen to their child's cries for long periods of time without the ability to comfort them. Criticism of the Cry it Out method argues that this style of sleep training is too harsh and gives babies negative perspectives of relationships and comfort when they're older. Even though research has shown that both methods are effective. The process has to be consistent from start to finish.
It's important to note that the Cry it Out method doesn't mean you ignore your baby through the night.
Whatever sleep method you choose, keep your baby's safety in mind. Most of all stay patient and consistent throughout the process to yeild the best results!