Basically, there is not a legal process for dealing with separation in Texas. But you can still move out and live separately from your spouse for as long as you need before you determine the future of your marriage.
In short, yes, you should have an attorney to represent you in a postnuptial agreement for several reasons: To be sure you are treated fairly in the agreement. To have the agreement upheld, as a court is much more likely to say it is a valid contract if both parties were represented by counsel when they entered into it.
Code § 4.102. Current with legislation from the 2023 Regular and Special Sessions signed by the Governor as of November 21, 2023. At any time, the spouses may partition or exchange between themselves all or part of their community property, then existing or to be acquired, as the spouses may desire.
To win a partition action can take anywhere from a couple of months to reach a settlement agreement to a year or more if it goes to a court trial.
Section 4.105 - Enforcement (a) A partition or exchange agreement is not enforceable if the party against whom enforcement is requested proves that: (1) the party did not sign the agreement voluntarily; or (2) the agreement was unconscionable when it was signed and, before execution of the agreement, that party: (A) ...
“LOSS OF PROPERTY OWNERSHIP. IF YOU SIGN THIS AGREEMENT AND YOUR MARRIAGE IS SUBSEQUENTLY TERMINATED BY THE DEATH OF EITHER SPOUSE OR BY DIVORCE, ALL OR PART OF THE SEPARATE PROPERTY BEING CONVERTED TO COMMUNITY PROPERTY MAY BECOME THE SOLE PROPERTY OF YOUR SPOUSE OR YOUR SPOUSE'S HEIRS.
The parties acknowledge that, to convert additional separate property of either party into com- munity property, the parties must prepare and sign a separate written instrument. This agreement may be enforced by suit in law or equity by either of the parties or by their heirs, executors, attorneys, or assigns.
The answer depends largely on how those accounts are managed. If community funds (like income earned during the marriage) are mixed with separate funds, the entire account can be considered community property, especially if it's impossible to trace the origin of the funds.
Texas does not recognize legal separations. In other words, while a married couple may choose to live separately, if they want to legally modify their relationship status, they must file for a divorce.
Waiting Period. (a) Except as provided by Subsection (c), the court may not grant a divorce before the 60th day after the date the suit was filed.