We too had a little 'un. (2 pound 5), when using the kitchen fingerboard I used to do (still do) 2 things.
Firstly, wait till the mrs goes out. Then I can do what I like, more or less....
Secondly, Carefully apply a touch of chalk to my tips by caressing the inner of my chalkbag so as not to create a cloud. (No french blows etc..)This is done on the cellar steps as the kitchen floor is black granite and I value my testicles too much to leave ANY evidence of chalk usage.
No probs yet, and that was 4 years ago...