add spaces.GPU(duration=120)

app.py

@@ -89,7 +89,7 @@ class RAGChatbot:
         [rest of your existing background prompt]
         '''
 
-    @spaces.GPU
+    @spaces.GPU(duration=120)
     def init_models(self):
         """Initialize the LLM and embedding models"""
         print("Initializing models...")