I’m doing the Arnold split where I do basically each body part 2-3 times a week. Should I change my workouts in one week?

I do chest/back, legs, then shoulders and bis and tris. Should I stick with doing the same workout routine throughout the week or should I change it up: where 1 day I’ll emphasize upper chest and do incline, and then the other chest day I’ll do regular bench, for example.
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I don’t think I was clear in my question. So my split in one week is 1. Back/chest 2. Legs 3. Arms 4. Chest/back 5. Legs 6. Arms 7. Rest.

My question is should I mix up my workouts during the week. Like first day of back/chest I do incline, for example. So on the next back/chest day should I change it to regular bench and mix it up? Or should I stick with doing the same
I’m doing the Arnold split where I do basically each body part 2-3 times a week. Should I change my workouts in one week?
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