You can't gain forever, plateaus are inevitable. That's why it's good to occasionally switch routine or vary the intensity.
There are several different options:
You can utilize planned deloads, Wendler's 5 3 1 for example has you deload every 4th week for active recovery, and DC has "blasting and cruising" phases. Deloads/cruises are necessary, you have to give your body a break once in a while, like it or not.
You can do what you call "staggered volume" where you set up different weekly schemes of progression. For example week 1 you hit 5x5 on the squats, and the following week you do 3x10. By doing this you keep things fresh and regulate the intensity since you will be obviously using lighter weights on the higher reps, but at the same time you will still be putting forth the effort.
You can use a recovery day in your split. Bill Starr/Madcow 5x5s (some of the most famous strength programs ever) and Rippetoe's Texas Method have light days in the middle of the week for the purpose of active recovery. The idea behind this is by hitting submaxmial weights (ie 80% of you normal worksets) you will be pumping blood into the muscles and expedite the recovery process.
Lastly, you could just look into a proven program like the ones mentioned above that already take this into account. I like how the 5 3 1 has you deload every 4th week, ensuring you stay fresh, and will make gains much more so then continuing to blast away.
If you have anymore questions bro let me know.