I'm in a similar situation. Here's what worked for me.
I also moved rig to the side of the room,
but I can still see the main tv from the seating position. It seems like the PSVR2 headset uses the TV as a reference point for play area tracking. I also have the tracking support feature enabled in the PS5/PSVR setting menu (which adds a patterned black border to the TV screen) so that may also be a requirement to make this work properly.
- Sit in your rig (with your PS5 tv/monitor somewhere within your field of view)
- Perform the room scan procedure looking all around until it's completed
- Then manually edit the play area using the PSVR2 controller to create a large area around the rig
- Apply/save or whatever and play the game.
- The next time you play, make sure you can see the tv/monitor within your field of view when starting up.
Hopefully the PSVR2 recognises the TV location and provided you're sitting in the manual play area you previously created, it won't prompt to rescan.
Direct light sources (such as a lamp) won't necessarily help with tracking though. In fact, they can be a detriment.
I've had situations where my rig was in front of the TV (me on the PSVR2) while my partner was watching a TV show. The tracking would randomly completely drop out and kick me from the game to the re-scan menu. It would seem when certain TV ads came on (displaying an almost entirely bright white screen on my Samsung QLED TV) it would be too bright and over-expose the PSVR2 tracking cameras.
I guess it 99% of your play time is GT7/PSVR2, perhaps a small, moderately bright monitor connected to the PSVR2 (with the tracking support border) at the front of the rig would work well. Worth testing if you have a spare one.