How to stop FYI approved notification to vendors in External Supplier Registration process

Summary:

We are using the following External Supplier Registration process,

a. Supplier Management team sends Prospective supplier registration URL to the vendors

b. Vendors register themselves using the above URL

c. Supplier Management team First-level approvers review and approve the prospective supplier registration records

d. Vendors get a notification on approval

e. The procurement (Client team) team review further and promotes the prospective supplier to Spend Authorised

f. The vendor receives an email notification after spend authorization approved

We would like to skip the first level notification to vendors (Point d ) and will keep only the second one which triggers spend authorization is approved.