If it's the actual radio: No. But if you want to optimise the time spent active (where most of the gains are), ESP-Now and BLE would be good options (though I s

If it's the actual radio: No. But if you want to optimise the time spent active (where most of the gains are), ESP-Now and BLE would be good options (though I suppose you're already using that?). Aside from that, NRF and Silabs chips have very low power radios with advanced features (advertising while the rest of the chip is sleeping).