How long of you been on clozapine? I just looked up the side effects and I did not see tremors or tardive dynasia. I am withdrawing from an antipsychotic now and my teeth clench a lot almost like a locked jaw very uncomfortable. Medications can have weird side effects so talk to your gp. Hope all goes well
How often are you getting your blood checked. Speak to a doctor for advice. It took 12 months for things to go wrong for me on clozapine after relative normal bloods. I didn't get shaky hands but my neutrophil levels fell to 0.8 so had to come off it straight away.
make an appointment as soon as you can just to be safe.