Hello! I found a way to do it for any pokemon.
Go on PID value with the mouse and stop, a label will pop-up. The label is the one I show in yellow.
You have the PSV value, you can ignore it. Inside the red square you have the Xor valure = 0, if it is= 0 so will always display shiny square in sword shield.
If is not = 0. Do Reroll and than press the star for shiny, or you can adjust the value, for example if Xor=4, and PID = DA3C2844, so write inside PID the value: DA3C2840 (in hex you did -4).
After that check it again if you have Xor=0 in the label.
If you are not practical with hex enumeration or you are lost, just reroll and try again.
Cheers!
