Upper/Lower Split - Basic Movements Only

[Chris_Colucci]

[quote]hanymamdouh wrote:
two years ago I decided to lose weight and had started strict diet, and dropped weight from 134kg to 62 kg.[/quote]
That’s some awesome progress. Nice work.

So, my question; is it enough to focus on main lifts only for 3 months to gain good amount of strength then reduce intensity and add more auxilary exercises?

That’s a solid plan, yes. Something like the 5/3/1 “triumverate” routine discussed here is exactly what you’re looking for:

5/3/1: How to Build Pure Strength

As you can see, it takes around 20 minutes to finish squat workout. After the third exercise (60 minutes of working out) I feel low of energy of course. Yesterday, I could only finish squat, RDL, BB calf raises, and front squat with some hip raise. It took me 90 minutes and left me very tired.

You’re describing a common situation a lot of guys end up in. Trying to follow a workout that’s poorly designed overall and that’s inappropriate for their current condition. Stick to a well-designed, pre-written program.