Slot Format 3.5G NSA with B3 for Uplink

Hi Friends, want to understand in NSA deployment with uplink on B3, what slot format is to be used? Can it be so that 3.5 GHz layer is used for downlink only, Format 0 and UE uplink is entirely on B3, slot format 1? Will this be an efficient network deployment? TDD downlink is based on reciprocity, but shifting complete uplink on B3, that will not be good for downlink? I assume latency issues and beam management will be a problem. Any inputs friends?