Hi Ayni,
In my experience with using EFT for potty training, I generally use the following language...
afraid to use the potty, afraid that I will fall in, I don't want to be a big-boy/girl, I don't want to have to use the potty, what if mommy leaves me on the potty too long (this usually happens when the child is on the potty and the parent walks out of the room or gets a phone call, causing the child to feel "stuck" there), I can't do it, I won't make it on time, etc.
Often children don't express their 'fears' about using the potty, be positive and supportive of all their accomplishments!
Best wishes and be sure to report back how it is going.
Sue