Upgrading kegel/jiggle balls

Hi everyone,
I have looked through other threads but cannot find any answers. I hope someone can advise me please.
I currently am using the basic 56g jiggle balls. I am just wondering if I need to upgrade as I wear them for a minimum of 8 hours a day, every day. I don't have any problem with them falling out (forget they are there actually). I can pee with them in and other day I forgot and did a no2 as well. I can easily grip my index finger. My question is do I need to downsize and increase the weight and if I do, which would you recommend?
Thanks in advance xx