There is not enough information here to know if your lawyer committed malpractice or not.
One thing that does drive me crazy is when lawyers do not communicate well with their clients. It is not likely malpractice when a lawyer does not keep the client well informed but it is bad for the profession, the attorney, and the client.
More directly getting to your question, the law regarding a Motion for Relief from Stay is clear, if you miss a payment on your mortgage after the filing of your case the Court WILL and must grant relief, it is simply not discretionary. Sometimes responding to a Motion for relief gets the motion in from of the judge sooner and thus relief is granted sooner. So waiting and doing nothing is the best move.
Some general information about chapter 13. Chapter 13 bankruptcy, if filed prior to a foreclosure sale, will stop the sale, at least temporarily. In order to save your home permanently from foreclosure, you will need to make all your future mortgage payments on time AND cure the arrears (missed payments) over the course of the Bankruptcy Plan. You must prove to the Court that you have enough money to pay for your daily living expenses and your mortgage and the plan payments.
Depending on how long ago relief was granted. You may be able to get a motion to rehear before the court. Motions for Relief from Stay can be stopped by catching up the payments by the hearing, entering into an agreement with the lender, proving the lender wrong, or amending the plan to include the missed payments. If none of that was possible, then losing the house might have be the only possible outcome.