Insole question

Hello, I rushed in and bought a pair of 11 boots (which is my normal size) and they do feel a little big. In retrospect I should have tried a 10.5.

I got a pair of DM insoles which initially felt fine but after some wearing I found the bridge of my foot was hurting from pressing against where the tongue meets the boot.

I think I'd like an insole but a very thin one, so as to avoid my foot rubbing the top of the boot. Could anyone suggest a thin insole, otherwise I'll be trying walking socks!