diff --git a/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterRecordCreationScheduler.java b/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterRecordCreationScheduler.java
index 461bfd9..7277f33 100644
--- a/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterRecordCreationScheduler.java
+++ b/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterRecordCreationScheduler.java
@@ -28,7 +28,7 @@ public class PetInitiatedLetterRecordCreationScheduler {
     private final LoadSettingPort loadSettingPort;
 
     @Async
-    @Scheduled(cron = "0 30 19 * * *")
+    @Scheduled(cron = "0 30 19 * * MON,WED,FRI")
     @Transactional
     public void createPetInitiatedLetterRecords() {
         List<UserPetPairDto> userPetPairs = userPetInitiatedLetterPersistenceAdapter.findAllUserPetPairs();
diff --git a/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterRetryScheduler.java b/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterRetryScheduler.java
index 8f62024..48254a6 100644
--- a/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterRetryScheduler.java
+++ b/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterRetryScheduler.java
@@ -30,7 +30,7 @@ public class PetInitiatedLetterRetryScheduler {
     private final SlackErrorReportService slackErrorReportService;
     private final PetInitiatedLetterSubmitter submitter;
 
-    @Scheduled(cron = "0 5 20 * * *")
+    @Scheduled(cron = "0 5 20 * * MON,WED,FRI")
     public void regeneratePetInitiatedLetters() {
         LocalDateTime now = LocalDateTime.now();
         LocalDateTime start = now.withHour(19).withMinute(29).withSecond(0);
diff --git a/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterSubmitScheduler.java b/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterSubmitScheduler.java
index d37890b..8e59e8d 100644
--- a/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterSubmitScheduler.java
+++ b/src/main/java/com/rainbowletter/server/petinitiatedletter/application/domain/service/PetInitiatedLetterSubmitScheduler.java
@@ -21,7 +21,7 @@ public class PetInitiatedLetterSubmitScheduler {
     private final PetInitiatedLetterJpaRepository petInitiatedLetterJpaRepository;
     private final PetInitiatedLetterSubmitter submitter;
 
-    @Scheduled(cron = "0 0 20 * * *")
+    @Scheduled(cron = "0 0 20 * * MON,WED,FRI")
     public void submitPetInitiatedLetter() {
         LocalDateTime startOfDay = LocalDate.now().atStartOfDay();
         LocalDateTime endOfDay = startOfDay.plusDays(1).minusNanos(1);