to  increase  marks  you  have  to  practice  more  and  more  question  so  that  by  doing  question  your  concepts  regarding  that  topic  will  be  cleared  and  you will  achieve  good  marks  and  your  concepts  also  get  cleared . this is the peak time now because after 1month you have your neet exam so do only questions now

To improve your marks in NEET mock tests,

Analyze your performance

Identify weak areas

Focus on strengthening those areas by revising concepts, solving problems, and practicing regularly with mock tests and previous years' papers

Doubt solving

Repeated evaluation

Make a mistake copy