diff --git a/project/ble_peripheral/ble_app_bladder_patch/measurement/adc121s051/dr_adc121s051.c b/project/ble_peripheral/ble_app_bladder_patch/measurement/adc121s051/dr_adc121s051.c
index 11ced3c..1529fb0 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/measurement/adc121s051/dr_adc121s051.c
+++ b/project/ble_peripheral/ble_app_bladder_patch/measurement/adc121s051/dr_adc121s051.c
@@ -151,10 +151,10 @@ static uint16_t clamp_measure_delay_us(uint16_t delay_us)
 #define BLE_REB_DATA_LEN        (BLE_MTU_SIZE - BLE_REB_HEADER_LEN)   /* 238 bytes = 119 samples */
 #define BLE_RED_DATA_LEN        (BLE_MTU_SIZE - BLE_RED_HEADER_LEN)   /* 238 bytes = 119 samples */
 #define BLE_PACKET_DELAY_MS     100     /* Inter-packet delay - allow BLE TX buffer to drain */
-/* maa_async: gaps between BLE notifications (sync MEC path still uses BLE_PACKET_DELAY_MS). */
-#define MAA_ASYNC_POST_REB_MS   3U      /* after reb: (was 5) */
-#define MAA_ASYNC_POST_RED_MS   18U     /* after each red: (was 50) */
-#define MAA_ASYNC_PRE_RAA_MS    15U     /* before raa: completion (was 50) */
+/* maa_async: inter-packet busy-wait (0 = rely on BLE_NUS_EVT_TX_RDY only). */
+#define MAA_ASYNC_POST_REB_MS   0U
+#define MAA_ASYNC_POST_RED_MS   0U
+#define MAA_ASYNC_PRE_RAA_MS    0U
 #define DR_ADC_AVG_INTER_BURST_GAP_US 500   /* Gap between averaged bursts to reduce residual echo carry-over */
 
 /* Piezo MUX pins (8ch) */