Thanks for providing more information about your setup. I don’t think Kill Dry will work for this, that would remove the dry signal completely and you would only hear the wet effected signal (no dry acoustic guitar).
If both algorithms are on Path 1, then there will be no way to adjust the level or bypass Path 2.
The simplest solution may be to connect the acoustic guitar to a physical mute switch or tuner before it goes into the H90 so you can easily mute it.
