Yes, it is !

It doesn't matter which test series you are taking, may it be Aakash,Allen or any other , make sure you  are good in the concept.Be thorough enough in NCERT as most of the questions come from NCERT.

Also , from this year NEET 2019 is going to be online , so practicing more number of questions will certainly help you feel comfortable with the online test pattern .Also practicing previous year question papers will build up your confidence as well as they 'll boost you up by brushing up fundamentals etc.

So choose wisely and go for it !

All the very best !

Hope this helps you !

Thanks & Regards,

SIRISHA SANATHA.