If you have access to somewhere that you can bring your rifle out to and stretch out to about 200m, then you can use a boresight panel to zero your IR laser to your day sight, no live-fire required as long as you have a good zero on your day sight:
Just make a 3x3' panel (you can literally cut open a box and use cardboard, or build a dedicated panel), and paint the high-contrast pattern which will be visible at night through a PVS-14 at 200m. A 3/4" road reflector is placed at the center of the boresight panel, and you can align your day sight to the center of the panel, then adjust the laser onto the center until the beam hits the reflector and blooms.
With a good day zero, you can boresight the laser in a matter of minutes, and it should match your day offsets (at least closely enough for practical shooting) that you're already accustomed to.
Your zero will start at mechanical offset at the muzzle, then converge at 200m, then begin drifting away again, and your POA offset is never greater than the mechanical offset of the laser until you reach 400m, and you can use this method to zero any device in any position, rather than having to use a specific zero target for a specific device in a specific location.
~Augee