Self soothing

Mary

My daughter is 5 months old and she has recently started self soothing by sucking on the corners of her bibs or sleep sacks. She sucks it and is asleep within 5 minutes but I don’t like her putting clothing into her mouth. I don’t let her sleep in a bib-sometimes during the day she gets it in her mouth before I realize she is tired and I take it off of her once she falls asleep. She doesn’t like pacifiers. Does anyone else’s baby do this?