Unless you have some system that is more successful - for example in the early type of races such as 2YO’s etc - there is no logic that I can see in stopping early or continuing for the full suite of your selections.
To embrace that approach would be similar to saying”I only bet after race 4 on the program” once again unless you had some system more suitable to the mature type of races it makes no sense.
I can’t see any punting magic in a night’s sleep or a new day that will make things right again.
In my opinion by stopping early etc all you are doing is delaying the inevitable.