Dear K.,
My sister takes care of a girl while her mom attends a meeting. The girl is in the 4th grade and was sucking on her shirt. She did not pay any attention to the behavior and the girl finally said ,excuse me, and stopped. She did not say anything to her about it. They just went on with something else.
My sister works with younger children as a profession and she felt it was an attention getter. So when my sister did not give her attentiion about the behavior of shirt sucking , the girl apologized and stopped and she engageg her in other conversation.
The sucking action is a comforting thing usually.
One of my sons had a behavioral habit of licking his lips until his mouth was chapped, then he would change to blinking his eyes for awhile. He finally grew out of it.
It is wise of you to talk with and ask him if anyone is bullying him or other things happening to him that he may be ashamed to tell you. Or afraid to tell you.
Pray that he will be open to you.
Eleven is a hard age to be. Do you remember it? It was an akward age. Those aged of kids just do the strangest thigs sometimes. I don't think they even know why.
Warmly, D. B.