diff --git a/Scripts/discord_webhook.py b/Scripts/discord_webhook.py
index c364882..c00fed8 100644
--- a/Scripts/discord_webhook.py
+++ b/Scripts/discord_webhook.py
@@ -56,8 +56,8 @@ def send_discord_message(message, username="Auto Garden Bot", is_alert=False):
         # 1b) quick mem check - avoid importing urequests/TLS when too low
         try:
             mem = getattr(gc, "mem_free", lambda: None)()
-            # raised threshold to reduce chance of spike during TLS/requests
-            if mem is not None and mem < 140000:
+            # lower threshold to match this board's free heap (~100 KB observed)
+            if mem is not None and mem < 90000:
                 return False
         except:
             pass
diff --git a/main.py b/main.py
index 6c9de8b..224b231 100644
--- a/main.py
+++ b/main.py
@@ -408,7 +408,7 @@ while True:
                 _gc.collect()
                 _gc.collect()
                 # require a conservative free memory threshold before TLS (adjust to your device)
-                mem_ok = getattr(_gc, 'mem_free', lambda: 0)() > 140000
+                mem_ok = getattr(_gc, 'mem_free', lambda: 0)() > 90000
                 if mem_ok:
                     try:
                         ok = discord_webhook.send_discord_message(pending_discord_message)