Most ranges frown on practicing most everything that has to do with the shooter being in motion, even drawing from the holster.
And forget about running around with a gun in hand or even rapid fire.
So, it might be best to split things up into what can be done on a range and what can be done at home.
At the range, if possible, arrange multiple targets, even if they have to be all on the same backing.
Something like four or five suitable sized circles to be engaged in different orders, as quick as the range rules allow.
Include magazine or cylinder reloads and such.
Weak hand shooting should also be part of a good practice routine, too.
At home moving and dry fire aiming drills can be added, as well as holster draws.
And what ever skills you see on youtube match videos that will prove necessary.
Modern realistic air guns are very useful, too.
There's lots more, of course, but I've found the above very helpful.
And definitely start your competition adventures with handgun matches before leaping into the possibly overwhelming three gun stuff.