I think we should turn to the correct form of Krishna for the specific need or interaction we desire.
There are primarily two forms of Krishna we can access directly: the name “Krishna” and the Śrīmad Bhāgavatam. There are also three other important forms within our reach: Krishna’s deity, Krishna’s devotee, and Krishna’s dhāma.
I think Krishna’s name is the form to turn to for giving ourselves, giving our heart, in utter purity and simplicity. Chanting Hare Krishna with real attention means offering our whole being to Krishna without any strings attached and with no ulterior motive. So I think the name is the form of Krishna that purifies the sādhaka by accepting his or her heart in sacrifice. Its the “fire” in which we “offer” our core being, in “sacrifice.” We turn to the name out of feeling the need to give ourselves entirely and wholly to Krishna — “svāha.”
Śrīmad Bhāgavatam is the form of Krishna with which we converse! I don’t think we should primarily turn to the name or the deity for conversation with Krishna. We should turn to Śrīmad Bhāgavatam for that. Krishna’s conversations constitute Śrīmad Bhāgavatam. If we dive deeply into reading it, those conversations include us and speak vividly and directly to and with us.
Krishna’s deity is a form that allows us to see the name, which otherwise is mainly heard. But I think the deity’s special function is to provide a focal point for the practice of personal service to Krishna. So, we turn to the deity out of need to practice rendering some personal favors or services to Śrī Krishna.
The other two forms of Krishna that even we sādhaka (by liberal application of the term) can access are: Krishna’s devotee and Krishna’s dhāma. These are devotional expansions of Krishna which support his rāsa. I think we turn to Krishna’s devotees for to gain empathy and sympathy and inspiration towards the Bhāgavatam, Deity, and Name. I think we turn to Krishna’s Dhāma (which is the platform that supports the name, deity, bhāgavatam and devotee) as we would turn to our mother – seeking affectionate support and nourishment.