I Have A Urinary Mitrofanoff Stoma Going To My Bladder.

I have a urinary Mitrofanoff stoma going to my bladder.
I do CIC into the stoma.
I push the catheter in to get urine flowing and stop pushing. When it stops flowing, I push the catheter in further to get more urine to come out. How do I know if I'm pushing the catheter in too far?

Thanks
Bob