Hi Gina,
last time I repotted it (from a 20cm pot to a 40cm pot) I cut off some roots because the rootball was incredibly crowded. It didn't seem to harm my plant as it grew massive. Thanks for your advice, next time I will try not to prune the roots. However, how do I deal with the fact that there are more and more roots? if I never prune them, some day they will blow up my pot