diff --git a/packages/editor/src/dataviews/store/private-actions.ts b/packages/editor/src/dataviews/store/private-actions.ts
index 0db70c8a0e6e7a..682a0c29b28e07 100644
--- a/packages/editor/src/dataviews/store/private-actions.ts
+++ b/packages/editor/src/dataviews/store/private-actions.ts
@@ -88,11 +88,12 @@ export function unregisterEntityField(
 	};
 }
 
-export function setIsReady( kind: string, name: string ) {
+export function setIsReady( kind: string, name: string, part: string ) {
 	return {
 		type: 'SET_IS_READY' as const,
 		kind,
 		name,
+		part,
 	};
 }
 
@@ -101,7 +102,8 @@ export const registerPostTypeActions =
 	async ( { registry }: { registry: any } ) => {
 		const isReady = unlock( registry.select( editorStore ) ).isEntityReady(
 			'postType',
-			postType
+			postType,
+			'actions'
 		);
 		if ( isReady ) {
 			return;
@@ -109,7 +111,8 @@ export const registerPostTypeActions =
 
 		unlock( registry.dispatch( editorStore ) ).setIsReady(
 			'postType',
-			postType
+			postType,
+			'actions'
 		);
 
 		const postTypeConfig = ( await registry
@@ -178,8 +181,20 @@ export const registerPostTypeActions =
 export const registerPostTypeFields =
 	( postType: string ) =>
 	async ( { registry }: { registry: any } ) => {
-		// TODO: do not register fields if there were already registered.
-		// Consider the existing isReady state.
+		const isReady = unlock( registry.select( editorStore ) ).isEntityReady(
+			'postType',
+			postType,
+			'fields'
+		);
+		if ( isReady ) {
+			return;
+		}
+
+		unlock( registry.dispatch( editorStore ) ).setIsReady(
+			'postType',
+			postType,
+			'fields'
+		);
 
 		const fields = [
 			featuredImageField,
diff --git a/packages/editor/src/dataviews/store/private-selectors.ts b/packages/editor/src/dataviews/store/private-selectors.ts
index e1daeb4032fc21..a683f1fbcc56ab 100644
--- a/packages/editor/src/dataviews/store/private-selectors.ts
+++ b/packages/editor/src/dataviews/store/private-selectors.ts
@@ -13,6 +13,11 @@ export function getEntityFields( state: State, kind: string, name: string ) {
 	return state.fields[ kind ]?.[ name ] ?? EMPTY_ARRAY;
 }
 
-export function isEntityReady( state: State, kind: string, name: string ) {
-	return state.isReady[ kind ]?.[ name ];
+export function isEntityReady(
+	state: State,
+	kind: string,
+	name: string,
+	part: string
+) {
+	return state.isReady[ kind ]?.[ name ]?.[ part ];
 }
diff --git a/packages/editor/src/dataviews/store/reducer.ts b/packages/editor/src/dataviews/store/reducer.ts
index 94d7f2e6c4f190..74a0bd91564390 100644
--- a/packages/editor/src/dataviews/store/reducer.ts
+++ b/packages/editor/src/dataviews/store/reducer.ts
@@ -13,7 +13,10 @@ type ReduxAction =
 
 export type ActionState = Record< string, Record< string, Action< any >[] > >;
 export type FieldsState = Record< string, Record< string, Field< any >[] > >;
-export type ReadyState = Record< string, Record< string, boolean > >;
+export type ReadyState = Record<
+	string,
+	Record< string, Record< string, boolean > >
+>;
 export type State = {
 	actions: ActionState;
 	fields: FieldsState;
@@ -27,7 +30,10 @@ function isReady( state: ReadyState = {}, action: ReduxAction ) {
 				...state,
 				[ action.kind ]: {
 					...state[ action.kind ],
-					[ action.name ]: true,
+					[ action.name ]: {
+						...( state[ action.kind ]?.[ action.name ] ?? {} ),
+						[ action.part ]: true,
+					},
 				},
 			};
 	}