The process that allows you to wear plug type jewelery is stretching.
I first put in thick bar bells for about a week, then I moved up to a size 2 taper and it hurt quite a bit. Then to a 4 taper, a blunt stretch to 5 taper to 6 and another stretch to 7. I kinda stopped after than point.
It’s personal choice though really, I wanted to go slow so I would be able to stretch back. You could most likely start at a bit bigger than 2 but that’s what I would go for.
for size reference ^