I have swapped wheels a few weeks ago. Disabled the air suspension and jacked up te car as you did.
But I didn't use the car's jack, I never use it unless in case of emergency.
I use a 3 Ton garage jack, it easily lifted the wheels off the ground. I also used a pair of wheel hangers.

 

You did it right but the factory car jacks have to be extended almost all the way up for you to change the tire. If you’re going to do wheel swaps on your own I would recommend getting a good tire jack. It’ll make life so much easier for you


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If you're going to do wheel swaps on your own I would recommend getting a good tire jack. It'll make life so much easier for you

And much safer!

 

A few months ago I had a flat that I changed on my XC90 with air suspension and 21" wheels. I did not disable suspension and used the jack included in the trunk. I didn't have any problems but it was a little tricky to find the spot where the jack should be placed. The manual showed this location. Maybe you just needed to extend it further?

 

This may be a dumb question, but don't you have to have service reprogram your vehicle when changing wheel size? Otherwise your odometer will no longer be accurate.

 

When the wheel diameter is taller, the tire is lower. Outside diameter doesn't change, at least not for
the sizes Volvo offers for the XC90 (except for the 22"?).

 

I Locked the suspension first, place the original jack underneath at required place

When you say you locked the air suspension do you mean you Disabled?

The manual says:

Models with suspension and level control:
Turn this function off before raising the vehicle.
To do so, go to Settings Vehicle Disable Suspension & Leveling Control in the center display's Top view.

I did this last night and didn't have any issues. I do have a floor jack though so maybe that helped. When I turned it back on I noticed the air suspension did some adjustments

That's interesting. I'm swapping 22s down to 20s on my R, and was told point-blank by the dealer that service needs to reprogram the computer for this swap.

Dang it - really?!!?

 

To avoid any confusion, I calculated the outside diameters of the available combinations.
I used the calculator at Tire Rack https://tiresize.com/comparison/
These are the results:
235/60/18: 29.1" (714 Revs/Mile)
235/55/19: 29.2" (712 Revs/Mile)
275/45/20: 29.7" (699 Revs/Mile)
275/40/21: 29.7" (701 Revs/Mile)
275/35/22: 29.6" (703 Revs/Mile)

 

This being the case, the difference is fairly minimal but could add up between the smallest and largest differences. Seems like swapping between the 20-22-inch sizes is really minimal and would add up to somewhere around 600 miles over 100,000 miles at most.

 

Difference between 20 and 22" is about 0.3%, not something to worry about