It depends on your capability if you think that you can do better next time & targeting only the government colleges then you can drop this year.

Based upon your score in NEET 2018, and the previous year cutoff, chances are less for admission to Government Medical Colleges under All India Quota and state quota. You may have chances in Deemed Universities. Use NEET College Predictor to Check Your expected MBBS/BDS colleges based  on Your NEET AIR
   https://medicine.careers360.com/neet-ug-college-predictor?icn=neet-clgpd&ici=qna-answer

Good Luck!

Hello,

Based upon your score in NEET 2018, and the previous year cutoff, chances are less for admission to Government Medical Colleges under All India Quota and state quota.

You may have chances in Deemed Universities.

Use NEET College Predictor to Check Your MBBS/BDS Chances in All India Quota, Deemed Universities & State Quota seat Based on Your NEET AIR.
   https://medicine.careers360.com/neet-ug-college-predictor?icn=neet-clgpd&ici=qna-answer 

The fees for Deemed Universities are quite high. So, if you have any particular college decided let me know, I will help you with all the necessary details.

And if you are ready to study and prepare again for 1 year then you should drop one year. It has to be your decision because you might be knowing yourself better than anyone else.

All the best !!