Plumbing Questions? Ask a Plumber and Get Answers ASAP.
Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.
How many handles does your shower valve/faucet have?
Then the only option is to install a single handle pressure balancing shower valve. There is no adjust that can solve this problem. Pressure balancing valves have been mandated for quite some time to alleviate this issue
Turning down the water temp might help somewhat but it's not a solution. Unless you turn the water temp below 120 then you'll have a lot less hot water capacity from the water heater. Even then it won't eliminate the problem