Hello Deepanshu,

Congratulations on covering all the topics of the syllabus, it can be a huge boost for motivation. There are a couple of things you can still do to improve the scores in UPSEE. I'm elucidating them here. Firstly, you can work on remembering the formulae in the syllabus, sometimes direct questions based on the are asked. Secondly, of couy keep revising. Keep revising and keep Revising. Revision is the best way of retaintion and to some level, excellence. Thirdly, analyse the trends and focus on important chapters. Fourthly, get yourself model papers and previous years questions and keep solving them. They increase your efficiency and speed . Your chances of making mistakes also falls. 

Keep these in mind and take your test with calm mind. You'll do well . All the best.