To get the rewards of ikhlas in all our actions:
At Fajr time recite the ayah:
إِنَّ صَلَاتِي وَنُسُكِي وَمَحْيَايَ وَمَمَاتِي لِلَّهِ رَبِّ الْعَالَمِينَ
"Surely my prayer and my sacrifice and my life and my death are (all) for Allah, the Lord of the worlds." 6:162
insha'Allah The whole day will pass with intention of iklaas/sincerity even though one may forget to make individual intention before any action/amal during the day.
-Mufti Taqi Usmani sb's advice