You can do this to increase the bass performance, but you will sacrifice the exactness in all other frequency bands. Avoiding early reflections is very important to get good sound. A placement next to a wall is not good.If monitors almost touching frontwall gets rid of the dip, you might not need those panels there anymore and can put them at the back (freestanding). that could get rid of some ringin from the first longitunal mode.
but I din't say you should do it like so, I said you have to play around more with positioning. I know it sucks since moving stuff around is a lot of work, but you can find some nice improvements (for free)
The current placement of the monitors and panels is good.
As I said multiple times you can't get good enough bass with these small monitors anyway. Therefore applying some bass boost eq in the meantime and live with less headroom. Add a good subwoofer later and you have a very decent set up. All other solutions won't last long.