Baby putting hand in my mouth for comfort

[BambiEll]

6mnth old will only fall asleep is she's got her hand in my mouth or playing with my gums/lips.

At first I thought it was sweet but I have now realised I need to nip this in the bud before it gets too much of a habit.

Has anyone experienced this and got tips on how to stop this?

DD1 used to like doing this.

I would move her hand so it was resting on my cheek or chest. She just wanted to feel skin. Now she can't fall asleep unless she's touching my skin somehow 😂.

Sometimes she makes me rest my cheek on hers when laying with her. She's 2 now.