Add timeout if SSH password is incorrect

Edit /etc/pam.d/sshd

# PAM configuration for the Secure Shell service
# Standard Un*x authentication.
@include common-auth

# >>>> ADD THIS:
auth       optional   pam_faildelay.so  delay=3000000

This will set timeout to 5 minutes.

IF you have no /etc/pam.d/sshd try /etc/pam.d/password-auth

Then restart sshd service