All of my defensive firearms get cleaned and oiled after they are shot at the range. Everything gets shot often enough that it doesn't go more than a couple months without cleaning.
OP, you need to actually shoot your home defense firearm. Buying a brand new gun and leaving it in the box or nightstand or whatever is no bueno, especially when you're talking about an...affordable product line. Not that the gun is bad, but you do need to be shooting it regularly to confirm functionality and you do need to be shooting some of your defensive ammo through it to make sure it cycles. The gun could have some kind of defect from the factory or other parts failure and you'd never know until you picked it up to defend yourself.
^^^^^THIS^^^^^^^^^^^^