Kyleena IUD help please

Cl

I just have a question about my Kyleena IUD. I got my Kyleena put in around August 2021, my periods slowed down to just spotting and maybe one day of very light bleeding and would be around for less then a week. Now it’s April 2024 and my past few periods have been getting heavier and heavier going back to like a normal period flow I don’t know if this is normal or if my Kyleena is starting to wear off does anyone know what this means?