Regardless of what you hear, thumb sucking is a perfectly normal, natural, and healthy activity for your newborn baby. However, some children do not give up this habit. If it lasts to 4, 5, and sometimes 6 years, your child may be at risk for or already develop some problems associated with thumb sucking.
Some of the problems can include misplaced teeth, whispering, and improper development of the mouth and jaw. You can also know more about how to stop sucking thumb via https://www.amazon.co.uk/Age-2-7-Stop-Thumb-Sucking/dp/B00VQU2DZS.
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How do you get your child to quit?
Good question and here's the first piece of advice. Don't yell, scream, or disturb your child while they are still sucking their thumb. This will only strengthen their thumb-sucking habit and make it harder for them to quit. There are several ways to get your little one to stop thumb sucking:
1) Taste – There are products you can put on your child's thumb that doesn't taste great. They are of course completely safe and approved by doctors. This is exacerbated by the direct stimulation of sucking the thumb with an unpleasant taste of the thumb.
2) Praise – If the child does not suck their thumb for a period of time, be sure to praise them. It provides positive reinforcement for something well done.
4) Pay more attention to the child – thumb sucking often continues because of feelings of insecurity and a need for comfort.
5) Older children – have them choose the method they would like to try. This gives them more control over stopping.
There are several options, but all of the above have been very well tested and have been shown to help any young child break the thumb-sucking habit. The most important thing to remember is to support and encourage them, help them break the habit.