If only America were a trumpet friendly country like Mexico ....
I had thought of buying a small motorhome so I could just drive it somewhere to practice but decided instead to build a "soundproofed storage shed practice temple". It won't be cheap but the building industry has a lot of new, more soundproof, building materials. My definition of "soundproof" is going to be 5 am LOUD practice with impunity. Check out Home Depot, they may have inexpensive materials that can be used to rig up something.
Try telling the wife you've decided to switch to the DRUMS and see if she doesn't soften on your trumpet practice.