How long between .2mm difference?

I have two sets of 5g plugs and one of them is 4.5 mm and the other is 4.7 mm as they’re glass so they just happened to be slightly larger, how long should I wait between these sizes? They technically slip in with no resistance or pain right now after being at 4.5mm for a week and a half however I feel like I should wait longer, so I didn’t keep them in, what are your thoughts!