Yes, I was going to ask the same thing. How restrictive.
It makes a difference if you can practice draws. In places I can't I at least start my presentation from compressed ready. Or from retention (elbow bent, butt against ribs)
In the most restrictive cases, I've been able to add some flavor by:
Starting from compressed ready, present, acquire and shoot controlled pair. Use a shot timer app.
Present, acquire, and shoot but face and present off to one side and a little bit high/low so you practice acquiring the target from all directions. Make your feet point off to the side so you start more genuinely "off target". (stay safe for other shooters too)
Target has 2 smaller targets within it. Practice 2 rounds left then 2 right, etc.. For more challenge, shoot 1 target, then swing your aim off paper (still be safe) then swing back and acquire second target and fire controlled pair. Do the same with diagonally spaced targets or vertical etc...In all directions.
Set up "cover" like a box or folding music stand that you have to lean to the side and fire around. Both sides. This may raise eyebrows. If you can't set up anything, practice leaning then firing as if you had cover.
You don't need me to tell you to practice reloads. Save ammo by just shooting 1-2, loading, shooting 2. Here's a good one - speed strips shooting with switched hands. HAH! Load from the speed loader/strip in your pocket like you would in real life.
Mix and match, do it all one handed, left handed one handed, write your average times for an exercise.
I found that on a really restrictive range, I can still work on fast target acquisition and re-acquisition. This is what slows me (and most casual shooters) down the most currently so even static ranges can be beneficial.
I always start and end with at least a few shots slow fire.. for pretty groups
Actually for fundamentals.
Plenty to keep you busy and wishing you had more ammo/range time. You won't get your gross motor skills movement but since the job of the lower body is to provide a stable platform, at least you can work the upper half.
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just saw your second post. If you are allowed to set up 2 targets, set one VERY close and one 7-10 yards away. Practice drawing, presenting (or retention) and shoot the close one 2-3 times immediately/quickly, then change pace for a little more accuracy for 2 COM shots. If you can, practice using the first target as cover and shoot around.
Can you backpedal? Kneel? Draw?