I will be washing for the same reason as you,
I am following "the original" person to do it, via this post https://www.420magazine.com/community/threads/bud-washing.200881/
He had a 4 part system, which included lemon and bicard in a 2nd bucket. I might still do the same but only on a 3 bucket system, so hot water bucket will also have lemon and bicarb.
This is basically to ensure that everything is dead like the mildew, and also that any cotton fibres, dead skin cells, dust etc is also washed off before the drying process.