Turn it on in the sink, then it may only take like a second in the shower (if you're lucky with your plumbing layout)
Why would I be inside the shower before the hot water shows upI turn on the shower at maximum hot, undress, THEN introduce cold back to a comfy temperature and step inside.
have you considered entering after the water warms up
how are you going to turn on the water without entering the shower cabin
put your hand in and turn it on from the outside
How fucking massive is your shower that you can't simply reach into it and grab the handle?
Aim the shower at the wall, turn it on, get out
Turn it on in the sink, then it may only take like a second in the shower (if you're lucky with your plumbing layout)