Periods with MIRENA (specifically this type of IUD)

Monique • Boobs and beer 😝
I've read all sorts of possibilities online as to what my period could be like, but few real (personal) experiences. I've had my Mirena since June (so for 4 cycles), and so far all I've noticed is slightly shorter periods and a different type of cramping. Did anyone have their period truly diminish and/or reduce to spotting? When would you say that it occurred? Thanks for your input!