Answer
Sometimes the lack of time is genuine due to one's prarabdha-karma, responsibilities, and survival pressures. However, one should also honestly examine life and capture whatever time is available.
Begin with whatever is possible:
One round
Two rounds
Three rounds
Chant sincerely in available moments—during travel, breaks, or any free period.
The speaker emphasized that Krishna reciprocates with sincere effort. As one chants faithfully, Krishna gradually rearranges one's life in such a way that more time becomes available for chanting. Eventually, even 16 rounds during Brahma-muhurta can become possible.
The key is sincerity, not excuses.