If they’re all on the same line you should only have to bypass one, but I’m no electrician I just hooked it up to a double light in my bathroom. The bypass was recommended in the inovelli document that came with the switch

I got these, the blues are zigbee, red is zwave. I also have no neutral and they work fine, though you might need an aeotec bypass if you lights flicker with no neutral https://www.amazon.com/gp/aw/d/B0BG329SH3?psc=1&ref=ppx_pop_mob_b_asin_title