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I'm sorry to hear about your situation. Yes. There are three levels of discovery in Texas. They don't refer to the types of documents and other things that can be requested, but rather the time period for discovery, number of interrogatories and requests for admission, etc... that can be sought. So even under a plan 1 or 3, you could still seek these things. Level 2 is the most common one, and the "catchall one". I've never had a Level 1 or 3 case in my career, if that tells you anything. 90% of cases are Level 2, and we hardly even think to change this provision in the forms when drafting the pleadings that we file.
Hope that clears things up a bit. If you have any other questions, please let me know. If not, and you have not yet, please rate my answer AND press the "submit" button, if applicable.
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Thank you, ***** ***** luck to you!