Restrict a number of OTP credentials

Starting from Keycloak 8.0.1 users can register multiple OTP devices.
Is there any way to restrict a number of OTP credentials (devices) for a user? The behavior I want to achieve is to allow only one OTP device to be active for a user.
The reason is that every time a user clicks on “forgot password” a new OTP credential will be added and some users are confused with already ten credentials.