diff --git a/_data/mentors.yml b/_data/mentors.yml
index 0e6f72cb..d1f6ce26 100644
--- a/_data/mentors.yml
+++ b/_data/mentors.yml
@@ -1692,8 +1692,8 @@
       Career change, app development, software development, GitHub, hackathons, technical writing, React, React Native, JavaScript, Node.js, MongoDB
   network:
     - linkedin: https://www.linkedin.com/in/arzucaner/
-    - medium: https://arzugny.medium.com/,
-    - github: https://github.com/arzucaner,
+    - medium: https://arzugny.medium.com/
+    - github: https://github.com/arzucaner
     - youtube: https://www.youtube.com/channel/UCsK0v6RouRYb5I1Ny8flrOg
 
 - name: Prabha Venkatesh
@@ -2624,5 +2624,5 @@
     extra: |
       - Generative AI, AI Agents, RAG, buillding LLMs
   network:
-    - linkedin: https://www.linkedin.com/in/ajmeranishi/,
+    - linkedin: https://www.linkedin.com/in/ajmeranishi/
     - website: https://nishiajmera.com/
diff --git a/_data/mentorship-timeline.yml b/_data/mentorship-timeline.yml
index 34d249bd..ca51bda8 100644
--- a/_data/mentorship-timeline.yml
+++ b/_data/mentorship-timeline.yml
@@ -24,7 +24,7 @@ long-term-timeline:
     description: >
       Throughout the programme, mentors and mentees will schedule regular meetings to discuss progress and share advice and feedback. The frequency of these meetings will depend on the preferences of the mentor and mentee, however, they will typically occur every 1-2 weeks.
 
-  - date: "July and October, 2025"
+  - date: "July and September, 2025"
     title: "Programme check-ins"
     description: >
       Mentors and mentees will be invited to a mentorship check-in meeting twice during the cycle to assess progress and collect feedback.
diff --git a/_data/study_group.yml b/_data/study_group.yml
index 67f2af5a..9cd2cc0b 100644
--- a/_data/study_group.yml
+++ b/_data/study_group.yml
@@ -16,15 +16,6 @@
   status: active
   link: /mentors?keywords=Liliia%20Rafikova
   index: 2
-- title: AWS Certification Preparation
-  mentor: Liliia Rafikova
-  description: |
-    A structured and supportive path to earning your AWS certification.
-    We cover foundational to advanced cloud concepts, hands-on labs, and exam strategies.
-    Whether you're aiming for Cloud Practitioner or Solutions Architect, you'll build the skills to confidently pass and apply AWS knowledge in real scenarios.
-  status: active
-  link: /mentors?keywords=liliia%20Rafikova
-  index: 3
 - title: Test Driven Development (TDD) - The Why, The How, The Do's and The Don'ts
   mentor: Wilson Adenuga
   description: |
@@ -33,7 +24,7 @@
     Great for developers who want to build software that’s robust, testable, and maintainable.
   status: active
   link: /mentors?keywords=Wilson%20Adenuga
-  index: 4
+  index: 3
 - title: Robotics Study Group
   mentor: Mentee Driven
   description: |
@@ -42,7 +33,7 @@
     Perfect for those looking to collaborate on robotics projects or learn from each other’s experiences.
   status: active
   link: null
-  index: 5
+  index: 4
 - title: Job Search and Career Progression
   status: active
   mentor: Ana Nogal
@@ -51,7 +42,7 @@
     Learn how to craft compelling resumes, ace interviews, and negotiate offers.
     This group also covers personal branding, networking strategies, and career development tips to help you advance in your tech career.
   link: /mentors?keywords=Ana%20Nogal
-  index: 6
+  index: 5
 - title: Data Science and Machine Learning Study Group
   status: upcoming
   mentor: Busra Ecem Sakar
@@ -60,4 +51,4 @@
     Covering everything from data preprocessing to model deployment, this group is ideal for those looking to build a solid foundation in data science.
     Participants will work on real-world datasets and projects, enhancing their skills through practical applications.
   link: /mentors?keywords=Busra%20Ecem%20Sakar
-  index: 7
\ No newline at end of file
+  index: 6
\ No newline at end of file