Your shoulders are weaker after chest because they have been used. At least one head of the delt has. (The only head that should be weak after chest training is the anterior head.) This is an advantage, not a disadvantage as you are treating it at present.
You have already stimulated a growth response in your anterior delt by this stage. Don’t try to train it heavy. Use lighter weight or alternative movements.
I am not a believer in heavy overhead pressing.
The other two heads should be unaffected by chest training and can be trained as normal.
Don’t train delts heavy before chest. That will spell disaster for your chest results because chest gets little stimulation from a delt workout.
Alternatively, change your split
Arms and delts