diff --git a/README.md b/README.md
index bd4a4ad..2f87b02 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,16 @@ Open the WebUI in a browser after launch only when explicitly requested:
 GOVOPLAN_OPEN_BROWSER=1 ./tools/launch/launch-dev.sh
 ```
 
+Limit backend reload triggers during focused module work without changing the
+enabled module graph:
+
+```sh
+GOVOPLAN_BACKEND_RELOAD_MODULES=calendar,campaign ./tools/launch/launch-dev.sh
+```
+
+Set `GOVOPLAN_BACKEND_RELOAD_MODULES=none` to watch only core/config sources.
+Leaving it unset keeps the broad default and watches all enabled modules.
+
 Start the shared development PostgreSQL service:
 
 ```sh
diff --git a/tools/launch/launch-dev.sh b/tools/launch/launch-dev.sh
index 735a4f0..e51f2cb 100644
--- a/tools/launch/launch-dev.sh
+++ b/tools/launch/launch-dev.sh
@@ -22,6 +22,7 @@ FRONTEND_USE_POLLING="${GOVOPLAN_FRONTEND_USE_POLLING:-1}"
 FRONTEND_POLLING_INTERVAL="${GOVOPLAN_FRONTEND_POLLING_INTERVAL:-500}"
 AUTO_SYNC_PYTHON="${GOVOPLAN_AUTO_SYNC_PYTHON:-1}"
 DEV_DATABASE_BACKEND="${GOVOPLAN_DEV_DATABASE_BACKEND:-postgres}"
+BACKEND_RELOAD_MODULES="${GOVOPLAN_BACKEND_RELOAD_MODULES:-}"
 
 LOG_DIR="${GOVOPLAN_DEV_LOG_DIR:-$META_ROOT/runtime/dev-launcher}"
 BACKEND_LOG="$LOG_DIR/backend.log"
@@ -167,7 +168,16 @@ port_is_free "$BACKEND_HOST" "$BACKEND_PORT" || fail "$BACKEND_URL is already in
 port_is_free "$FRONTEND_HOST" "$FRONTEND_PORT" || fail "$FRONTEND_URL is already in use"
 
 printf 'Starting GovOPlaN backend at %s\n' "$BACKEND_URL"
-run_grouped "$ROOT" "$BACKEND_LOG" "$PYTHON" -m govoplan_core.devserver --host "$BACKEND_HOST" --port "$BACKEND_PORT"
+backend_args=(-m govoplan_core.devserver --host "$BACKEND_HOST" --port "$BACKEND_PORT")
+if [ "$BACKEND_RELOAD_MODULES" = "none" ]; then
+  backend_args+=(--reload-core-only)
+elif [ -n "$BACKEND_RELOAD_MODULES" ]; then
+  IFS=',' read -r -a reload_modules <<< "$BACKEND_RELOAD_MODULES"
+  for reload_module in "${reload_modules[@]}"; do
+    [ -n "$reload_module" ] && backend_args+=(--reload-module "$reload_module")
+  done
+fi
+run_grouped "$ROOT" "$BACKEND_LOG" "$PYTHON" "${backend_args[@]}"
 backend_pid="$run_grouped_pid"
 
 printf 'Waiting for %s/health\n' "$BACKEND_URL"