Possible and Impossible are exactly dependent on experimentation. So we can't conclude that because absolute impossibility isn't a reality.

Now you have mentioned you are preparing the Polity section only from the General Awareness and the whole Law portion i.e.,

Legal propositions

Conclusions

Legal Maxims

Bare Acts of the Indian Constitution

Now if I assume that you got 25/25 in LAW and if we consider the equal distribution of marks in general awareness then you will get approximately 5/25. Thus if this is your preparation and if you are a know it all then you will get 30/100. You know this isn't sufficient.

Now what I would suggest is that you can skip the Current Affairs portion and study the rest of the General Awareness like Economics, Geography and Indian Independence History. This will at least provide you better marks in General Awareness portion.

Now from the English comprehension portion the syllabus is:

Unseen passages

Grammar & comprehension

Proverbs

Antonyms & synonyms

One word substitute

Sentence and word correction

Spell checks

Now Unseen comprehension can be done by you easily as we all have passed our secondary years. Now if you think Grammar portion is intermediating for you then I would suggest you that see the basics like Tense, Voice change, Preposition and Narration change. If you can do this four you will score atleast 2-3 question from grammar portion. Now synonyms and Antonyms will need memorization and practice. So for that you can refer to the CLAT papers or if you have any past year books for DU. Here its a uncertainty but if you have good luck then you can obviously attempt atleast 1 question. Now the analytical skill portion is entirely left to you. If you can you can go for it atleast the easy ones like:

Logical Reasoning

Analytical Reasoning

Number Systems

Percentage & Average

Profit Loss

Time Speed and Distance

Try to do this at least and never forget to go through the Statistics graphs. Its really important portion.

All the above mentioned can be covered up in 3 weeks if you invest 8 hours a day. Its the d-time so you have to work hard if you really want to crack it. If you cover this portions then you will have higher possibility to crack the examination.

To know more about DU LLB syllabus visit the link below:

https://law.careers360.com/articles/du-llb-syllabus

I hope this answer helps. All the very best for your future endeavors!