My 3 month old kitten wont stop trying to nurse on my skin...?

she tries to nurse on my hands, arms and face...her mom abandoned her and was bottle fed and taken care of. I feel bad pushing her away when she tries to nurse because i feel like she is looking for comfort...but its very annoying and it keeps me up at night. Is there anything I can do to discourage her from trying to nurse on me? I have heard that you can try to get the kitten to nurse on blankets but im not sure how to get her to do it.