You asked me to comment. I really have to question a couple things. From 15 to 21 you gained 50lbs but with some smoothness. From 21 to 34 (13 years!!!!) WITH THE HELP OF JUICE you gained 20lbs (roughly). I dont get it. Every new time user of juice usually gains 25-30lbs with the help of sauce. EVERYONE ALMOST ACROSS THE BOARD! And then the guys who really know their shit training and eating wise go far past that and the guys who only know juice and only juice never make those ongoing further gains into massiveness. They lacked the eating and training knowledge on how to do so and never learn it...so to them its only "well i guess i got to abuse myself with these many mg's to make gains"...they have no clue otherwise.
How do you go 13 years and only gain 20lbs in the best time of your life to make gains (20's and 30's)?! I dont understand it and it makes me question your training. You should be at this time using massive poundages and something tells me you are not. There is no way you can be 210lbs of 6'1 with the help of juice if you are squatting 405lbs for 20 reps, using 150lb dumbells on presses for reps, rowing 350 plus in bent over rows for reps, smith shoulder pressing 315 plus for reps and on and on and on thru each bodypart. Something is amiss here. And i feel if you are truthful to all of us you will say you arent even remotely in those ranges. Because you cannot be small in those ranges. So there was some kind of disconnect here (in my opinion) training wise on what needed to get done to get over each new plateau. Me you would NEVER SEE ME go 13 years in my 20's to gain 20lbs. Thats running on a treadmill and wasting valuable time.
There is a reason why you never see a massive bodybuilder sticking with 135lb inclines and 135lb squats and 95lb barbells shoulder presses their entire career. If it was that easy to get massive everyone would be massive. There is a reason massive people can do things like this
Whether you DC train or volume train or do any training method known to man....if you are not going to progress up into weights that create a massive bodybuilder you are going to fail. Unless you have god given mesomorphic genetics that make you an outlier (which virtually no white person has) or unless you sauce your way there in milligrams. Which a lot of people do....the problem most havent figured out the equation yet on how to live past 55 years old doing it that way.
So sorry to be blunt but you asked me to comment. ME? I would never take no for an answer and I would NEVER allow myself to go 13 years in my prime (with the help of juice) to gain 20lbs. I would not have it. I would not stand for it. I would figure out what I am missing in the equation. IMO there is fake testosterone problem going on or there is some serious reconsideration of what it takes to be a 6'1" 280lb beast in the offseason. Just in comparison...my training partner sought me out in the gym many years ago 6 foot tall 157lbs if i remember right. Retired marine. He is black so he has a slight step up but he is in his 50's. Lifetime natural and will never juice. Its his choice, his mantra and thats ok. I dragged that MF thru workouts that made other training partners quit in the past. 50 rep leg presses, paused smith squats, conquering every weight stack on every machine in a gym with gympins and plates added until we have to switch gyms. He has told me in confidence that there were times "he could not walk the next day and almost quit but he kept silent about it and forged on" That guy is 223lbs right now with 19 inch arms...lifetime natural. Its not even a conversation. Now if that guy can do it in his 50's.....he would be 275 with juice (which i dont want for him and he does not want for himself either, not smart to go up in weight like that at that advanced age). But your story makes me question if you are realizing how hardcore you need to train and the progression you need to make weights and reps wise to become a massive bodybuilder. If it was easy...these message boards and heck bodybuilding social media wouldnt be 90% based on "how the heck do i get bigger, can someone help me?"....its hard.