I have issues with my Concertos, anyone know how to help?

Okay so I bought my Concertos last March (2024) but I’ve only used them for about 4-5 months. I’ve quickly noticed that the tongue sort of slides down towards the toebox/toes which is very uncomfortable and often painful. Like it messes with my jumps and spins and I have to manually drag up the tongue for every time I bend my ankles. It’s incredibly exhausting. I’ve checked and double checked that I’ve laced them correctly, so I doubt it’s that. The issues have also only gotten worse the more I use them. What should I do? I’ve contacted a local distributer (where I bought them from), but they’re on vacation for a while more. I would love some insight before my competition. Thanks!

EDIT: I’ve taken your advice to check out of the boot is too big (which it is for one of my feet). Apparently my right foot is significantly shorter than my left foot, and that’s causing the tongue to slide down. I haven’t gotten around to trying a lot of different things, but I’ve put a cut up sponge in there to see if it works during today’s practice.