Yes of course.
My internship ended in December, 2019. I have given first set of exams in nov/dec 2019 and NEET 2020.
Got a rank of 9000 in NEET, 5500 in AIIMS, 1000 in PGI and 3500 in JIPMER.
I started studying properly in February of 2020, and gave my mid years, since I wanted to do radiology and nothing else.
And in the 2020 mid year exams, I got ranks of 31 in AIIMS, 36 in PGI and 9 in JIPMER.
Hence, everything is possible, just believe that it is and put your hard work in it.