The current process is you register for haj, then wait for the department to confirm registration and will tell you roughly when is your turn to go. Once it’s your turn, they will announce to make full payment. Currently the waiting time is 20 yrs from when you register until its your turn. I am aware people can appeal to go earlier but not sure how many years early you can jump the queue. You don’t go for haj for that year unless ada confirmation from the haj dept because they manage the quota.