diff --git a/jupyterjsc/custom/fleet.yaml b/jupyterjsc/custom/fleet.yaml
index 5ab7858a9187547834084d146659a25dd9a81f93..aac7220ed2119ecf0152a1f5d593ab94e01487d2 100644
--- a/jupyterjsc/custom/fleet.yaml
+++ b/jupyterjsc/custom/fleet.yaml
@@ -30,6 +30,7 @@ helm:
         body: "All running JupyterLabs will be stopped during this maintenance."
       services:
         JupyterLab:
+          defaultOption: "4.3"
           "4.3":
             allowedLists:
               groups:
@@ -89,7 +90,6 @@ targetCustomizations:
     clusterSelector:
       matchLabels:
         stage: production
-        maintenance: "false"
     helm:
       values:
         global:
@@ -112,7 +112,7 @@ targetCustomizations:
     clusterSelector:
       matchLabels:
         stage: production
-        maintenance: "true"
+        maintenance: "true-disabl"
     helm:
       values:
         ingress:
diff --git a/jupyterjsc/z2jh/kustomize-maint/kustomization.yaml b/jupyterjsc/z2jh/kustomize-maint/kustomization.yaml
deleted file mode 100644
index 07d927ef14978d671898b3403935859579606015..0000000000000000000000000000000000000000
--- a/jupyterjsc/z2jh/kustomize-maint/kustomization.yaml
+++ /dev/null
@@ -1,28 +0,0 @@
-# InitContainer list in hub component:
-# 0 - prepare-shared-data
-# Container list in hub component:
-# 0 - check-frontend-files
-# 1 - sidecar-nginx
-# 2 - hub
-patches:
-- target:
-    kind: Deployment
-    labelSelector: component=hub
-  patch: |-
-    - op: add
-      path: /spec/template/spec/containers/2/envFrom
-      value:
-        - secretRef:
-            name: generics
-    - op: replace
-      path: /spec/replicas
-      value: 0
-- target:
-    kind: Ingress
-    group: networking.k8s.io
-    version: v1
-    labelSelector: app=jupyterhub
-  patch: |-
-    - op: replace
-      path: "/spec/rules/0/http/paths/0/backend/service/port/name"
-      value: https
diff --git a/maintenance/values/overlays/production/hosts.yaml b/maintenance/values/overlays/production/hosts.yaml
index d0b1697b0f88476a037be87552f258b7b1e304fb..75518bb29c60a794579910f3ca5bc667a4191108 100644
--- a/maintenance/values/overlays/production/hosts.yaml
+++ b/maintenance/values/overlays/production/hosts.yaml
@@ -1,9 +1,9 @@
 ingress:
   hosts:
-    - host: jupyter.jsc.fz-juelich.de
-      secretName: jupyterjsc-tls
-    - host: jupyter-jsc.fz-juelich.de
-      secretName: jupyterjsc-tls-old
+    #- host: jupyter.jsc.fz-juelich.de
+    #  secretName: jupyterjsc-tls
+    #- host: jupyter-jsc.fz-juelich.de
+    #  secretName: jupyterjsc-tls-old
     - host: jupyter.eurocc-gcs.de
       secretName: eurocc-tls
     #- host: juniq.fz-juelich.de