Hi,
generally and theoretically, it's quite an easy step. You need to consent to any treatment that you receive. Therefore, if you don't consent - no treatment. The Physiotherapy treatment is an option - the most recommended one, but still only an option. You do not have to do it.

In practice, it's a bit harder, because of the human connection and trying to keep your options open.
I would recommend that you tell your Physio and Specialist (he also needs to know) that you have decided to not go along with the recommended plan of action. You do not have to justify your decision, but it might keep communication patyhways open.

As Physios, we know that patient motivation is the key to any success. So if there is no buy-in on your side, success will be much harder to achieve. It is up to the Physiotherapist to educate you about benefits of their treatment and what the consequences of non-attendance could be.

The internet has allowed patients to research medical treatment on their own over the last few years, with more or less success. The step away from traditional medicine, whether eastern or western, is possible.

It is up to you what you decide, but please ensure that you undertake a truly informed choice.

Regards,
Fyzzio