improved find column function

process.py

@@ -109,6 +109,10 @@ def find_name_column(df):
 
 
 def find_date_column(df):
+    # Check if 'Treatment dates' column exists
+    if 'Treatment dates' in df.columns:
+        return 'Treatment dates'
+
     date_pattern = r"\b\d{2,4}[-/]\d{1,2}[-/]\d{2,4}\b"  # Regex pattern for common date formats
 
     max_count = 0
@@ -124,4 +128,4 @@ def find_date_column(df):
             max_count = valid_count
             date_column = column
 
-    return date_column
+    return date_column