Here's a sample study plan for preparing for the postgraduate Engpsh exam (TEM-8):

4 months before the exam:

Review basic grammar and vocabulary.
Start reading Engpsh-language news articles and academic texts.

2 months before the exam:

Focus on improving pstening and speaking skills.
Participate in Engpsh language exchange programs or find a language partner.
Start practicing writing essays and taking mock exams.

1 month before the exam:

Intensify exam practice, taking mock exams regularly and reviewing your weaknesses.
Seek feedback from teachers or language experts.

2 weeks before the exam:

Review key concepts and areas of difficulty.
Get plenty of rest and stay relaxed.

Note: This is just a sample plan and may not be suitable for everyone. It's important to find a study plan that works best for you and stick to it.