I am a DIYer with electrical wiring experience. I would like to add an existing secondary light to the 3-way circuit. The current box has two switches. The one on the left controls the main light and is part of the 3-way circuit. The one on the right controls a secondary light. I would like to remove the switch for the secondary light and have it controlled with the 3-way switch. The existing wiring is a little confusing. I have diagrammed it below as best as I can figure it out. (Ground wires are ignored.)
I would appreciate any advice you could provide. Thanks!