Your brain clone won't be a person with legal rights, at least not right away. However, that doesn't mean you can't keep your brain clone running. You could set up a trust and instruct the trustee to pay the bills for your brain clone.
The Trustee will will maintain the Settlor's Simulation Memorial from trust funds by providing hosting resources at a level equivalent to typical simulation memorials. In addition, the Trustee shall update software modules associated with the Settlor's Simulation Memorial to a level equivalent to typical simulation memories at least every four years.
It might even be possible eventually to require the trustee to listen to the brain clone.
Should the Settlor's Simulation Memorial achieve a level of competancy regarding the Simulation Memorial's hardware and software infrastructure, the Trustee shall consult with the Settlor's Simulation Memorial on all configurations and arrangements for the Simulation Memorial's hardware and software infrastructure.
Unlikely as it seems today, the brain clone could even manage its own trust.
Should the Settlor's Simulation Memorial be judged to the cognitive abilities and legal rights of a person, the Settlor's Simulation Memorial shall be appointed as sole Protector Trustee of the Trust.