Ben wa balls/ kegal balls?

Al
I bought some Lelo Luna Beads and it said to start out with the light ones and then work up to the heavier ones. You're supposed to wear them until they fall out. I used the lighter ones and they didn't ever fell like they were about to come out, so then I tired the two heavier ones (37 grams each) and it still didn't feel like it. I wore them for about an hour of walking and jumping around and I still had to pull pretty hard in the string to get them to come out. I didn't think I was that tight lol (9 months postpartum but I haven't done any kegals before this). So I was wondering if I should try to get smaller in diameter balls, or just heavier ones? Or maybe I put them in too far if that's possible? 🤔 Anyone have recommendations on a good set?