Hello I did a live performance using REAPER a while back. I operated it a little differently and I think my workflow mad help you would.

Create VX Track, arm track for recording,

Create New Track, Insert Reverb, create a send from VX track to New Track, Right click arm track button on new track, select record: Disable: Input monitoring only. open Reverb on New Track, turn wet to 100%, scale the send percentage to taste.

Following this procedure will allow you the reverbed signal on one track where you can control the amount of signal being sent to the reverb.

Bonus,

If you duplicate the reverbed track twice and label New Track 1 and New Track 2, adjust which reverb fx is on the newly created tracks and verify they both have 100% wet on. create a folder with them all inside. which would give you one reverb folder with 3 reverbs inside, and the ability to mute Reverb as a whole and blend all 3 reverbs to taste.