diff --git a/gen_cons.py b/gen_cons.py
index 157c77c..eafdc19 100644
--- a/gen_cons.py
+++ b/gen_cons.py
@@ -180,6 +180,53 @@ def load_workers():
     print(rota_b_assignments)
     # You can now use rota_b_assignments as needed
 
+    # --- Load prior allocations (targets) from CSV ---
+    priors_path = "cons/sep2025priors.csv"
+    priors_map = {}
+    try:
+        priors_df = pd.read_csv(priors_path)
+        for _, prow in priors_df.iterrows():
+            initial = str(prow.get("Worker", "")).strip()
+            if not initial or initial.lower() == "nan":
+                continue
+            prev = {}
+            # expected columns: oncall, twilight, weekend
+            for col in ("oncall", "twilight", "weekend"):
+                raw = prow.get(col, "")
+                if pd.isna(raw) or raw == "" or str(raw).strip() in ("-", "nan"):
+                    continue
+                s = str(raw).strip()
+                # Expect formats like: '4 (2.50)' or '3 (2.86)'
+                worked = 0.0
+                allocated = 0.0
+                if "(" in s:
+                    try:
+                        worked_part = s.split("(")[0].strip()
+                        worked = float(worked_part)
+                    except Exception:
+                        worked = 0.0
+                    try:
+                        inner = s.split("(", 1)[1].split(")", 1)[0]
+                        allocated = float(inner.strip())
+                    except Exception:
+                        allocated = worked
+                else:
+                    try:
+                        allocated = float(s)
+                    except Exception:
+                        continue
+                    worked = 0.0
+
+                # store as tuple (worked, allocated) as expected by RotaBuilder
+                prev[col] = (worked, allocated)
+
+            if prev:
+                priors_map[initial] = prev
+    except FileNotFoundError:
+        print(f"Prior allocations file not found: {priors_path}")
+    except Exception as e:
+        print(f"Error reading prior allocations: {e}")
+
     # --- Example: Print the first few rows of each sheet ---
     #print("Days sheet:")
     #print(days_df.head())
@@ -257,6 +304,7 @@ def load_workers():
                 ) for req in work_requests if req["worker"] == worker
             ],
             nwds=non_working_days,
+            previous_shifts=priors_map.get(initial, {}),
         )
 
         #if initial == "L1":
@@ -336,12 +384,13 @@ def main(
         rota_start_date,
         weeks_to_rota=weeks,
         balance_offset_modifier=bom,
+        use_previous_shifts=True,
         name="cons rota feb 2026",
         allow_force_assignment_with_leave_conflict=True,
         constraint_options=RotaConstraintOptions(
             balance_weekends=True,
             max_shifts_per_week=6,
-            max_days_per_week_block=[(4, 2), (4, 3)],
+            max_days_per_week_block=[(4, 2), (4, 4)],
             balance_weekend_days=True,
             #weekend_day_hard_max_deviation=2,
         ),