Can you switch attorneys in the middle of a case?
Yes. You can replace your lawyer if you have lost faith or confidence in your lawyer to represent you, you have the right to change counsel. If you hire a new lawyer in the middle of a case, that lawyer will need to get up to speed on the case and that will likely cost you some more time and/or money.
How many times can a deposition be postponed?
There are only so many times that a deposition can be postponed. Usually, after two or three times the court will get involved. You should expect a postponed deposition to be rescheduled fairly quickly. There is a lot of money tied up in a deposition, so any hiccups are usually taken care of very promptly.
What does it mean when they keep pushing your court date back?
It could mean that they are still collecting evidence to build a case. It could mean that a key witness is sick or unavailable. It could mean that the prosecutor on the case has some other big cases or a vacation scheduled and so needs to push your case back. There are many reasons why a case might be pushed back.