Deadlift is very taxing, I don't think you should do it each of the 3 days of the week. Consider something else that is similar but not as taxing. I am also doing full body 3 times a week but I do other back exercises instead. It really depends on how you feel and if you can handle it. How does your full body workout currently look?
Day 1
Back Squat 3x10 or 5x8
Flat Bench Press 3x10 or 5x8
Machine Row or Seated Cable Row 3x10 or 5x8
Cable Lat Pulldown or (Machine for lats, I can't remember the name) 3x10 or 5x8
Arm work
Day 2
Front Squat 3x10 or 5x8
Deadlift 3x10 or 5x8 (I went really heavy 2 weeks ago and only did 3x5, but this is my general flow)
Standing OHP 5x5 or 5x8
Barbell Shrugs 5x5 or 5x8
Rack Pulls (above the knee)
1 or two more shoulder exercises
Day 3
Back Squat 3x10
Flat Bench Press 3x10
Lunges 3-4 sets, most of the length of the gym, or about 8-10 reps per leg
Leg Press, 3x10
Leg Extension 4-5 sets, 12-15 reps, light weight for burnout/less tension on knees
On my off days, I'm trying to do 10,000 pulls ups in a year, an project OmarIsuf completed last year.
I've been watching around my fitness subs (Athlean-X, AlphaDestiny, Buff Dudes, OmarIsuf, ScottHerman, AlanThrall), kind of analyzing my routine and trying to optimize it. Full body is the truth for me, especially higher volume, but I want to make sure that I'm both efficient and effective during this process.