Only you know this for sure. For me touch charges in the beginning were very small. A hand on her shoulder as I passed by the chair she was in, or putting my hand on the small of her back as I passed behind her in the kitchen. I didn't graduate to initiating hugs until after those seem to be well received.
So as with anything in DBing, gauge its effectiveness and act accordingly. Do what works. Don't do what doesn't.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018