Here’s some ways to get serious short range training value, listed from longest range needs to shortest.
How to use a 22lr to simulate long range sniper shots (out to 200 yards or so):
Use an air rifle to play the “MiniSniping” match game (out to 40 yards or so): http://www.minisniping.org/
Set up a “1,000 Inch” range (25 meters), use one and a half inch black circles as targets to give you a 6 MOA aiming black target. Put ten circles per page, shoot to hit all ten within a half inch of center (the 10 ring).
Set up a reduced distance MiniSniping course, using spent 22 rimfire cases at 22 yards rather than 9mm casings at 35 yards.
Set up a 10 meter (33 feet), use standard 10m bullseye targets, and practice three position (standing, kneeling, prone) or four positions (standing, kneeling, sitting, prone) shooting. Shoot for score. https://www.midwayusa.com/product/723452/nra-official-air-rifle-targets-ar-5-10-10-meter-air-rifle-paper-pack-of-100
Set up a 5 meter range, use 5 meter BB gun targets, practice three our four position shooting. Shoot for score. https://www.midwayusa.com/product/642406/nra-official-air-rifle-targets-ar-4-10-5-meter-bb-gun-paper-pack-of-100
I hope these ideas help you get better practice.