I've been down this road and tried all the things the internet has to offer. In the end they all felt like cheap DIY hacks and I did not keep those guitars despite all the effort. I want my guitars to feel *finished*.I've got a P22 that I've loved a long time, but the body is a little heavier than I like, likely due to it being a little thicker than a typical Cu22/24; so it is sometimes prone to sliding off my leg. Not neck heavy at all. Any suggestions for reducing the body weight, even if just a little? Thanks.
However you might try a footstool for classical guitarists, to elevate your right leg. Or find a chair that lets you elevate that leg (no need to buy stuff just to try this position)