diff --git a/servers/fastapi/api/v1/ppt/endpoints/presentation.py b/servers/fastapi/api/v1/ppt/endpoints/presentation.py
index 1fcec4ba..e5b1398b 100644
--- a/servers/fastapi/api/v1/ppt/endpoints/presentation.py
+++ b/servers/fastapi/api/v1/ppt/endpoints/presentation.py
@@ -293,35 +293,43 @@ async def stream_presentation(
     return StreamingResponse(inner(), media_type="text/event-stream")
 
 
-@PRESENTATION_ROUTER.put("/update", response_model=PresentationWithSlides)
+@PRESENTATION_ROUTER.patch("/update", response_model=PresentationWithSlides)
 async def update_presentation(
-    presentation_with_slides: Annotated[PresentationWithSlides, Body()],
+    id: Annotated[uuid.UUID, Body()],
+    n_slides: Annotated[Optional[int], Body()] = None,
+    title: Annotated[Optional[str], Body()] = None,
+    slides: Annotated[Optional[List[SlideModel]], Body()] = None,
     sql_session: AsyncSession = Depends(get_async_session),
 ):
-    updated_presentation = presentation_with_slides.to_presentation_model()
-    updated_slides = presentation_with_slides.slides
-
-    presentation = await sql_session.get(PresentationModel, updated_presentation.id)
+    presentation = await sql_session.get(PresentationModel, id)
     if not presentation:
         raise HTTPException(status_code=404, detail="Presentation not found")
 
-    presentation.sqlmodel_update(updated_presentation)
+    presentation_update_dict = {}
+    if n_slides:
+        presentation_update_dict["n_slides"] = n_slides
+    if title:
+        presentation_update_dict["title"] = title
 
-    await sql_session.execute(
-        delete(SlideModel).where(SlideModel.presentation == updated_presentation.id)
-    )
+    if n_slides or title:
+        presentation.sqlmodel_update(presentation_update_dict)
 
-    # Just to make sure id is UUID
-    for slide in updated_slides:
-        slide.presentation = uuid.UUID(slide.presentation)
-        slide.id = uuid.UUID(slide.id)
+    if slides:
+        # Just to make sure id is UUID
+        for slide in slides:
+            slide.presentation = uuid.UUID(slide.presentation)
+            slide.id = uuid.UUID(slide.id)
+
+        await sql_session.execute(
+            delete(SlideModel).where(SlideModel.presentation == presentation.id)
+        )
+        sql_session.add_all(slides)
 
-    sql_session.add_all(updated_slides)
     await sql_session.commit()
 
     return PresentationWithSlides(
         **presentation.model_dump(),
-        slides=updated_slides,
+        slides=slides or [],
     )
 
 
diff --git a/servers/fastapi/models/presentation_with_slides.py b/servers/fastapi/models/presentation_with_slides.py
index 481aaf8e..d91ca305 100644
--- a/servers/fastapi/models/presentation_with_slides.py
+++ b/servers/fastapi/models/presentation_with_slides.py
@@ -4,46 +4,18 @@ import uuid
 
 from pydantic import BaseModel
 
-from models.presentation_layout import PresentationLayoutModel
-from models.presentation_outline_model import PresentationOutlineModel
-from models.presentation_structure_model import PresentationStructureModel
-from models.sql.presentation import PresentationModel
 from models.sql.slide import SlideModel
 
 
 class PresentationWithSlides(BaseModel):
     id: uuid.UUID
+    user: uuid.UUID
     content: str
     n_slides: int
     language: str
-    file_paths: Optional[List[str]]
     title: Optional[str] = None
-    outlines: Optional[PresentationOutlineModel] = None
     created_at: datetime
     updated_at: datetime
-    layout: Optional[PresentationLayoutModel]
-    structure: Optional[PresentationStructureModel] = None
-    instructions: Optional[str] = None
     tone: Optional[str] = None
     verbosity: Optional[str] = None
     slides: List[SlideModel]
-
-    def to_presentation_model(self) -> PresentationModel:
-        return PresentationModel(
-            id=self.id,
-            content=self.content,
-            n_slides=self.n_slides,
-            language=self.language,
-            file_paths=self.file_paths,
-            title=self.title,
-            outlines=self.outlines.model_dump(mode="json") if self.outlines else None,
-            created_at=self.created_at,
-            updated_at=self.updated_at,
-            layout=self.layout.model_dump(mode="json") if self.layout else None,
-            structure=(
-                self.structure.model_dump(mode="json") if self.structure else None
-            ),
-            instructions=self.instructions,
-            tone=self.tone,
-            verbosity=self.verbosity,
-        )
diff --git a/servers/nextjs/app/(presentation-generator)/services/api/presentation-generation.ts b/servers/nextjs/app/(presentation-generator)/services/api/presentation-generation.ts
index 3b3f3b0f..acaa851e 100644
--- a/servers/nextjs/app/(presentation-generator)/services/api/presentation-generation.ts
+++ b/servers/nextjs/app/(presentation-generator)/services/api/presentation-generation.ts
@@ -113,7 +113,7 @@ export class PresentationGenerationApi {
       const response = await fetch(
         `/api/v1/ppt/presentation/update`,
         {
-          method: "PUT",
+          method: "PATCH",
           headers: getHeader(),
           body: JSON.stringify(body),
           cache: "no-cache",