See, the things are getting back on track now, and according to the original schedule of JEE Main examination conducted by the National testing Agency (NTA), the first iteration of the JEE Main is held in January and the second in April. So, I would suggest you that you plan your preparation and make up your mind according to the original schedule and think that JEE Main is going to be held in January.

Moreover, I would like to tell you that getting a high percentile with a relatively lower score is easier in January than in April, so kindly give your all in the first attempt itself.

Hope I have answered your question. All the best!