Can i delay or space out dental xrays without getting fired by my dentist?

No: That's dumb. If you need x-rays, then you need them on all your teeth at one time. We do not take one x-ray at a time as that would not give a complete picture. Do whatever your dentist tells you and stop trying to be your own dentist or outsmart your dentist. The dentist is giving you the best possible dentistry for your benefit and if you say no you are hurting yourself.

Yes: The frequency of xrays generally depends on your oral hygiene history and how many teeth are have fillings/crowns and how often are they being replaced. If you have really good oral hygiene and not many fills (especially older ones), then spacing xrays may not be a problem. Have a honest talk with your dentist and discuss your concerns!

Personalized treatme: Depends on your dentists' policies. There really is no strict guideline that says you have to take x-rays 1 time a year. If you have not had a history of decay and have not had a cavity in a few years, you should be ok to go 1 and a half to 2 years between x-rays. If, on the other hand, you have dry mouth or a history full of cavities, etc. You may need to have x-rays every 6 months.