Should the reckoning of numerous intentions in actions and habits be abandoned for one whose time is constrained by studies?

Combining multiple intentions in acts of worship and everyday habits is permissible and rewarded. It is Sunnah for a Muslim to strive in this as much as possible, and to make the intentions at the very beginning of an action, so that their entire life becomes an act of worship to Allah the Almighty. An example of this is intending, through eating, drinking, and sleeping, to gain strength for obeying Allah.