Coppee iud Questions

Hey I'm going tomorrow to switch out my hormonal IUD Jaydess for a FlexT300 copper IUD.

This hormonal IUD has given me horrible skin, extreme mood swings, trouble sleeping, bleeding or aweful grey/brown sometimes smelly discharge. Had it 3 months and I'm not waiting any longer.

So just wondering how long I could bleed with the copper IUD. And how long before I got my period back. I'm 4 months PP and not breastfeeding. Never got a cycle before IUD.

Thanks!