Welcome to the Community @Gregory63!
@Chris3 and @Mike_T have great suggestions. Until we can all move freely about the cabin - I mean country - a few things you can do at home include training to fight from a seated position:
Out of curiosity, why are you sighting your laser at 18 feet? Self-defense incidents usually take place between 7-12 feet and, unless your home is really big or open concept, most rooms aren’t 18 feet long. 