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2nd preacher in this line.
I carry into homes also.
I do not "get my gun & put it on to go there." I just do not take it off when I arrive. 6:00am & it is on now. When I get dressed I put my billfold in my pocket, change, keys, & the "rest of my stuff." ie Gun, extra mag, pepper.
If you are travelling to & from the different homes you should be armed in those travels. When you arrive at a house, to disarm & then re-arm after you get back in your car is unnecessary handling & leaves your gun unattended in a vehicle.
You are not getting a gun to go into their house.
You are armed & not taking it off just to enter.
What is the difference?
What you are preparing for & which is incidental to being armed.

A few suggestions.
Be comfortable w/ your rig before you make your calls armed.
Have a quality belt & holster that is comfortable to you.
A good pair of all elastic suspenders will be your best friend. I likeem. If you gun is covered so are your suspenders. (unless you wear a shirt tucker & no vest, jacket, or coat.)
When you get out of your vehicle stretch, wiggle, & adjust pants & belt if necessary. This is a natural time. After that leave it alone & dont "fixit."
Practice sitting at your house a lot in different types of furniture.
Learn to leave it alone. Dont "fixit"
For comfort sitting, avoid deep, fluffy, low sofas. Greater tendancy for these to cause poking & gouging from gun butt & especially if you carry a medium size to large frame IWB in a kydex holster.
While you are there, remember, it is covered & no one sees it. You are not printing, dont worry about that so leave it alone & dont "fixit."
Avoid chairs w/ wooden arms if you are a big person & carrying OWB. If you would brush the arms w/o an OWB gun on, you will be in a real bind w/ it on.
If you shoulder carry, you can cover a pretty large gun w/ far less than most folks think. I cover my Kimber Pro w/ a light vest. Yes "No sleeves too."
The biggest fear of folks new to carry is that some one will see, know, find our while you are there,....
That is why I continually remind folks of 2 things.
1. Good quality gun belt & holster that is comfortable to you.
2. put it on, Cover It Up, & LEAVE IT ALONE. Dont fixit.

The more you carry at home even after you get your plastic the more comfortable you will become.
Now,
all of the above is what I have learned from several yrs of carry. Take what you like, trash what you dont, try anything you want to.
It takes a little time to learn but you can do it if you decide.

One more thought.
If you job is a service job, tight places, behind appliances, in the attic, ...I will encourage you to try things at home w/ the carry weapon of your choice. I dont have any experience there.
Good learning.
LT