Just that really, my 6 year old has sucked their two middle fingers since about 5 months old. Much less now, but usually when they are bored or tired (they do it to get themselves to sleep). It makes a horrible noise, makes the skin on those fingers and hand sore and drives DH and I batty, as it's usually accompanied by using the other hand to pick their nose
.
I know they don't do it at school anymore - it got mentioned at parents evening in Reception, but never since and they don't do it in front of other people unless TV is on or they are really tired.
We've tried, giving something to hold, explanations about effect on teeth, trying to get them to come up with ways to stop, but nothing. I (mostly) ask them to take their fingers out calmly, but DH often ends up shouting "fingers!" which is not ideal. I will mention it when we're driving in the car (common trigger), fingers go out and a minute later, they are back in again.
Apart from it being gross, I do worry it might affect teeth - we've currently got one wobbly tooth so I know adult teeth are on the way. Every so often we try to crack down on it, but it never sticks. Possibly because they do it every night to fall asleep and I've no idea how to break that association.
Any tips?