My trucks stance is about 3/4 inch lower in the rear

I can tell by looking at it and by taking a measurement from center of the well in front and back.
Tire pressure the same.

Doesn't really bother me, I don't know if its normal or rear springs relaxing.

If I wanted to raise the rear by 3/4 or more what would be the best way to accomplish it?
Blocks ?

Here's a pic

Not really noticeable, but I do load it at times with supplies or trips to the land fill.
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Thanks for any suggestions.