This x 1000!
I know plenty of players who have more cues than ability...
They are constantly messing with a setup... and wonder why they are not consistent.
Basic biology.
Humans have muscle memory.
We get better at things through repetition.
Translation: Practice, put the time in.
Adjusting what equipment you use too much messes with the variables.
Cue, tip, chalk etc...
Anyone, including Professionals I have seen, take a minimum of 3 months to adjust to a new setup.
Then, they rarely change.
Some are forced to by sponsors... but, not in Snooker.
As for adjusting from 9ft to 7ft tables, cloth, balls...
That is something that again, comes with practice.
Don't mess with stance, addressing the ball.
Play style and patterns remain the same, mostly... 7ft tables is more about touch and feel with breaking out clusters and 9ft is about playing for lines and areas... in my experience.
I often spend a week of solid practice, I mean 10 hours min, I have a job... so... moving from 7ft to 9ft or 9ft to 7ft.
That is just me, you adjust pace and get used to the conditions.
Again, secret is time and practice and muscle memory.
Effort is the key word.