time fix tweaks

pages/llm_tutor.py

@@ -109,4 +109,5 @@ if next_btn:
     print(time.time())
     print(st.session_state.tutor_start_time)
     push_study_time_data(time.time() - st.session_state.tutor_start_time)
+    st.session_state.postquiz_start_time = time.time()
     st.switch_page("pages/postquiz.py")

pages/presurvey.py

@@ -1,5 +1,6 @@
 import streamlit as st 
 from utils.firebase_util import push_presurvey_data
+import time
 
 st.title("Pre-Survey")
 st.write("Please take this short survey:")
@@ -24,4 +25,5 @@ submit_btn = st.button("Submit")
 
 if submit_btn:
   push_presurvey_data(q1, q2, q3, q3_other)
+  st.session_state.prequiz_start_time = time.time()
   st.switch_page("pages/prequiz.py")

pages/textbook.py

@@ -34,6 +34,7 @@ if next_page:
     print(time.time())
     print(st.session_state.textbook_start_time)
     push_study_time_data(time.time() - st.session_state.textbook_start_time)
+    st.session_state.postquiz_start_time = time.time()
     st.switch_page("pages/postquiz.py")