The New Crown booster cannot be given a week earlier and should be given 6 months after completion of all vaccinations. A booster is a vaccination that is given after the completion of the full course of vaccination in accordance with the routine procedure, in order to increase the level of antibodies. According to the national schedule, a booster can only be given 6 months after the completion of the full vaccination and cannot be given earlier. To receive the booster shot, you need to bring your ID card to the vaccination center, and the staff will judge according to the time of the previous vaccination, and if you have completed 6 months, you will be able to receive the booster shot. The booster shot can quickly raise the antibody level several times after vaccination to get better protection. Therefore, if you have been vaccinated for 6 months, you should get a booster shot.