On the appointment booking page, you will see the option of purchasing a membership.
If you are a new client, purchase an initial consultation appointment and a membership that includes recurring weekly follow-ups. If you are an old client and already had an initial, you can decide whether or not a new initial consultation is appropriate. If you feel you do not need an initial consultation, just purchase a membership of weekly follow-ups. (If it has been a while since you were last seen, and you reverted back to your old eating habits, you probably need a new initial).