diff --git a/ch05/07_gpt_to_llama/converting-gpt-to-llama2.ipynb b/ch05/07_gpt_to_llama/converting-gpt-to-llama2.ipynb
index 2b537ee..01fb09e 100644
--- a/ch05/07_gpt_to_llama/converting-gpt-to-llama2.ipynb
+++ b/ch05/07_gpt_to_llama/converting-gpt-to-llama2.ipynb
@@ -108,7 +108,7 @@
     "id": "UJJneXpTEg4W"
    },
    "source": [
-    "## 1. Convert the GPT model implementation step by step"
+    "# 1. Convert the GPT model implementation step by step"
    ]
   },
   {
@@ -129,7 +129,7 @@
     "id": "979c7b6d-1370-4da1-8bfb-a2b27537bf2f"
    },
    "source": [
-    "### 1.2 Replace LayerNorm with RMSNorm layer"
+    "## 1.1 Replace LayerNorm with RMSNorm layer"
    ]
   },
   {
@@ -228,7 +228,7 @@
     "id": "5eb81f83-c38c-46a4-b763-aa630a32e357"
    },
    "source": [
-    "## Replace GELU with SiLU activation"
+    "## 1.2 Replace GELU with SiLU activation"
    ]
   },
   {
@@ -300,7 +300,7 @@
     "id": "4f9b5167-1da9-46c8-9964-8036b3b1deb9"
    },
    "source": [
-    "## Update the FeedForward module"
+    "## 1.3 Update the FeedForward module"
    ]
   },
   {
@@ -388,7 +388,7 @@
     "id": "f6b7bf4f-99d0-42c1-807c-5074d2cc1949"
    },
    "source": [
-    "## Implement RoPE"
+    "## 1.4 Implement RoPE"
    ]
   },
   {
@@ -503,7 +503,7 @@
     "id": "f78127b0-dda2-4c5a-98dd-bae8f5fe8297"
    },
    "source": [
-    "## Add RoPE to MultiHeadAttention module"
+    "## 1.5 Add RoPE to MultiHeadAttention module"
    ]
   },
   {
@@ -652,7 +652,7 @@
     "id": "e5a1a272-a038-4b8f-aaaa-f4b241e7f23f"
    },
    "source": [
-    "## Update the TransformerBlock module"
+    "## 1.6 Update the TransformerBlock module"
    ]
   },
   {
@@ -727,7 +727,7 @@
     "id": "ada953bc-e2c0-4432-a32d-3f7efa3f6e0f"
    },
    "source": [
-    "## Update the model class"
+    "## 1.7 Update the model class"
    ]
   },
   {
@@ -791,7 +791,7 @@
     "id": "4bc94940-aaeb-45b9-9399-3a69b8043e60"
    },
    "source": [
-    "## Initialize model"
+    "## 2. Initialize model"
    ]
   },
   {
@@ -1029,7 +1029,7 @@
     "id": "5dc64a06-27dc-46ec-9e6d-1700a8227d34"
    },
    "source": [
-    "## Load tokenizer"
+    "## 3. Load tokenizer"
    ]
   },
   {
@@ -1259,7 +1259,7 @@
     "id": "f63cc248-1d27-4eb6-aa50-173b436652f8"
    },
    "source": [
-    "## Load pretrained weights"
+    "## 4. Load pretrained weights"
    ]
   },
   {