alexm2310 don't talk to me. I was giving my advice after being asked for it. Your anecdotal examples aren't worth much, I'm not going to counter your flimsy arguments about what players "should" do.
The entire "tactics training" fiasco has been a disaster and a failure from the start, which is what I've been saying for years. All of those "knight's errant" guys ended up a complete failure, unable to grasp even the basics of proper chess play. Training tactics a lot is not only useless, it's also draining and it's inhuman. It's not fun. I don't want to play against people who "study" and drill like machines.
Now you're just trying to hurt my feelings sir....Wait, how did you learn about my new TT approach? 
I actually have a new personal regimen that is based on the V3 theme training AND reviewing failed problems. I'm doing 10 from each theme and I'm doing as many themes as I can and then rotating right through until; wait for it, I've learned from my mistakes. 
At least 15 hours.
Setting sleep to 8 hours. That's 30 minutes left for watching a nerdy movie, 29 minutes to order a pizza and eat it, and there's a minute left for personal hygiene and care, which is even maybe too much for a chess player. If you cut your hygiene down you can do tactics for 15 hours and 30 seconds.
The 30 seconds may not seem like much, but over the 20 years of training needed it adds up, and may just get you that advantage in pawn structure than makes you win. So my advice it mainly to learn to cut personal hygiene.