Yep, just center the target in the field of view, and you’ll get a nice hand-sized group at inside-the-home distances. The first time I tried that, it was because my optic battery went dead at the range and I hadn’t brought a spare with me (learning experience!) but then I realized it’s something I should be practicing anyway.
OLNS, is the light sensor inside the optic, or is it on top? If the latter, if covering it with your finger makes the dot brighter, you could tape a little piece of tinted film over the sensor to make the optic think it’s darker. You might have to remove it when shooting outdoors in the daytime if it’s co-located with the fiber optic pickup, though (I’m speculating here because I have no experience with that particular optic).
I did something similar with the annoying “auto-dimming” mirror in the Acura I used to have; it had a light sensor that would prevent the mirror from dimming during daylight, which was exceedingly annoying whenever I got an idiot on my bumper with high-beam daytime running lights at mirror height. So I stuffed a balled-up Kleenex tightly in the sensor so that the mirror always thought it was dark...worked perfectly.