diff --git a/de_react_auto b/de_react_auto
index a9507df..7111bb8 100644
--- a/de_react_auto
+++ b/de_react_auto
@@ -343,19 +343,28 @@ local function calculateFieldInput()
     -- Total input needed
     local totalInput = baseInput + correction
 
-    -- SAFETY: Never return less than the drain rate (would cause field to drop)
-    -- Add 10% safety margin, but ensure minimum of 1M RF/t during warmup when drain is 0
-    local minimumInput = math.max(drainRate * 1.1, 1000000)
+    -- If field is above target, allow input to go very low (just above drain rate)
+    -- If field is below target, ensure minimum input to build field
+    local minimumInput
+    if currentStrength > targetStrength then
+        -- Above target - only maintain drain rate, let field drop
+        minimumInput = drainRate * 1.1
+    else
+        -- Below target - ensure some input even if drain is 0
+        minimumInput = math.max(drainRate * 1.1, 1000000)
+    end
 
-    local result = math.max(minimumInput, math.floor(totalInput))
+    local result = math.max(0, math.floor(math.max(minimumInput, totalInput)))
 
     -- Verbose output
     local fieldPct = string.format("%.1f%%", currentStrength * 100)
     local targetPct = string.format("%.1f%%", targetStrength * 100)
     if currentStrength < targetStrength - 0.01 then
-        print("[FIELD] " .. fieldPct .. " < " .. targetPct .. " target -> increasing input to " .. formatNumber(result) .. " RF/t")
+        print("[FIELD] " .. fieldPct .. " < " .. targetPct .. " target -> increasing input to " .. formatNumber(result) .. " RF/t (drain=" .. formatNumber(drainRate) .. ")")
     elseif currentStrength > targetStrength + 0.01 then
-        print("[FIELD] " .. fieldPct .. " > " .. targetPct .. " target -> reducing input to " .. formatNumber(result) .. " RF/t")
+        print("[FIELD] " .. fieldPct .. " > " .. targetPct .. " target -> reducing input to " .. formatNumber(result) .. " RF/t (drain=" .. formatNumber(drainRate) .. ")")
+    else
+        print("[FIELD] " .. fieldPct .. " at target -> maintaining " .. formatNumber(result) .. " RF/t")
     end
 
     return result