Tbt Question

excuse me for my ignorance, but im starting up a tbt routine based on the article of this site (im just posting up the first 2 weeks of the routine)

week 1

day 1
back squats
db bench press
skull crushers
pull ups
barbell curls
military db press

day 2
power cleans
db rows
incline curls
incline bb press
db tricep extensions
back squats

day 3
bb bench press
close gripped bench press
bb military press
back squats
pull ups
preacher curls

week 2

day 1
deadlifts and incline db press
power cleans
incline hammer curls and rope pushdowns
back squats

day 2
skull crushers and bb curls
pull ups and db bench press
military bb press
back squats

day 3
back squats
preacher curls and close gripped bench press
power cleans
incline bb press and db rows

my questions are am i frequently changing my workouts too much, and is the antagonist training correct? i didn’t know how to pair delts with anything

also do supersets count as 1 set each time you do them? for example if i did bench press and then db rows would it count as 1 set?