You can remedy this by purchasing a stronger set of suction cups from your local hardware store. (thatvideogameblog.com)
This allows you to find the one that most closely resemble the feeding pattern of your baby and inside each of those feeding rhythms are eight different levels of suction strength. (lansinoh.com)
We don't have much luck with suction cups on our current tile, but this has worked for us previously. (onecrazyhouse.com)