jenkinsfile revert change it didnt change

api/Jenkinsfile.ble_test

@@ -85,7 +85,9 @@ pipeline {
                     ssh -o StrictHostKeyChecking=no root@${params.host_ip} -o ServerAliveInterval=60 -o ServerAliveCountMax=120 << EOF
                         echo === Initiating Tail Watchdog ===
                             screen -dmS ble_test_watchdog_${env.TEST_HASH} sh -c '
-                                sleep 15
+                                while ! pgrep -f "tail.*ble_test_${env.TEST_HASH}" > /dev/null; do
+                                    sleep 1
+                                done
                                 while pgrep -f "tail.*ble_test_${env.TEST_HASH}" > /dev/null; do
                                     if ! screen -list | grep -q ble_test_${env.TEST_HASH}; then
                                         pkill -9 -f "tail.*ble_test_${env.TEST_HASH}"