WHETHER THERE IS ANY IMPACT OF TIME FACTOR IN FOLLOWING DHARMA?

The concept of "dharma" gets influenced by the factor "KAla". That is why with each passing Yuga there is a decline in the practice of "dharma."

While one follows whatever dharmAnushthAna is possible by him in this Kali yuga, there is no need to condemn others who do not follow it totally.

The following quote from ParASara is worth remembering in this regard:

yuge yuge ca ye dharmAs tatratatra ca ye dvijAh !
teshAm nindA na kartavyA yugarUpa hi te dvijAh !!