diff --git a/library/train_util.py b/library/train_util.py
index 25cf7640d..74050880a 100644
--- a/library/train_util.py
+++ b/library/train_util.py
@@ -4600,7 +4600,7 @@ def task():
 
 def get_optimizer(args, trainable_params):
     # "Optimizer to use: AdamW, AdamW8bit, Lion, SGDNesterov, SGDNesterov8bit, PagedAdamW, PagedAdamW8bit, PagedAdamW32bit, Lion8bit, PagedLion8bit, AdEMAMix8bit, PagedAdEMAMix8bit, DAdaptation(DAdaptAdamPreprint), DAdaptAdaGrad, DAdaptAdam, DAdaptAdan, DAdaptAdanIP, DAdaptLion, DAdaptSGD, Adafactor"
-
+    
     optimizer_type = args.optimizer_type
     if args.use_8bit_adam:
         assert (
@@ -4874,6 +4874,7 @@ def get_optimizer(args, trainable_params):
         optimizer = optimizer_class(trainable_params, lr=lr, **optimizer_kwargs)
 
     elif optimizer_type.endswith("schedulefree".lower()):
+        should_train_optimizer = True
         try:
             import schedulefree as sf
         except ImportError:
@@ -4885,10 +4886,10 @@ def get_optimizer(args, trainable_params):
             optimizer_class = sf.SGDScheduleFree
             logger.info(f"use SGDScheduleFree optimizer | {optimizer_kwargs}")
         else:
-            raise ValueError(f"Unknown optimizer type: {optimizer_type}")
-        optimizer = optimizer_class(trainable_params, lr=lr, **optimizer_kwargs)
-        # make optimizer as train mode: we don't need to call train again, because eval will not be called in training loop
-        optimizer.train()
+            optimizer_class = None
+
+        if optimizer_class is not None:
+            optimizer = optimizer_class(trainable_params, lr=lr, **optimizer_kwargs)
 
     if optimizer is None:
         # 任意のoptimizerを使う
@@ -4990,6 +4991,10 @@ def __instancecheck__(self, instance):
     optimizer_name = optimizer_class.__module__ + "." + optimizer_class.__name__
     optimizer_args = ",".join([f"{k}={v}" for k, v in optimizer_kwargs.items()])
 
+    if hasattr(optimizer, 'train') and callable(optimizer.train):
+        # make optimizer as train mode: we don't need to call train again, because eval will not be called in training loop
+        optimizer.train()
+
     return optimizer_name, optimizer_args, optimizer
 
 
diff --git a/train_network.py b/train_network.py
index bbf381f99..c236a2c95 100644
--- a/train_network.py
+++ b/train_network.py
@@ -61,6 +61,7 @@ def generate_step_logs(
         avr_loss,
         lr_scheduler,
         lr_descriptions,
+        optimizer=None,
         keys_scaled=None,
         mean_norm=None,
         maximum_norm=None,
@@ -93,6 +94,30 @@ def generate_step_logs(
                 logs[f"lr/d*lr/{lr_desc}"] = (
                     lr_scheduler.optimizers[-1].param_groups[i]["d"] * lr_scheduler.optimizers[-1].param_groups[i]["lr"]
                 )
+            if (
+                args.optimizer_type.lower().endswith("ProdigyPlusScheduleFree".lower()) and optimizer is not None
+            ):  # tracking d*lr value of unet.
+                logs["lr/d*lr"] = (
+                    optimizer.param_groups[0]["d"] * optimizer.param_groups[0]["lr"]
+                )
+        else:
+            idx = 0
+            if not args.network_train_unet_only:
+                logs["lr/textencoder"] = float(lrs[0])
+                idx = 1
+
+            for i in range(idx, len(lrs)):
+                logs[f"lr/group{i}"] = float(lrs[i])
+                if args.optimizer_type.lower().startswith("DAdapt".lower()) or args.optimizer_type.lower() == "Prodigy".lower():
+                    logs[f"lr/d*lr/group{i}"] = (
+                        lr_scheduler.optimizers[-1].param_groups[i]["d"] * lr_scheduler.optimizers[-1].param_groups[i]["lr"]
+                    )
+                if (
+                    args.optimizer_type.lower().endswith("ProdigyPlusScheduleFree".lower()) and optimizer is not None
+                ):  
+                    logs[f"lr/d*lr/group{i}"] = (
+                        optimizer.param_groups[i]["d"] * optimizer.param_groups[i]["lr"]
+                    )
 
         return logs
 
@@ -1279,7 +1304,7 @@ def remove_model(old_ckpt_name):
 
                 if len(accelerator.trackers) > 0:
                     logs = self.generate_step_logs(
-                        args, current_loss, avr_loss, lr_scheduler, lr_descriptions, keys_scaled, mean_norm, maximum_norm
+                        args, current_loss, avr_loss, lr_scheduler, lr_descriptions, optimizer, keys_scaled, mean_norm, maximum_norm
                     )
                     accelerator.log(logs, step=global_step)