You don’t need to undergo all available medical procedures in order to be successful changing your gender in the Family Court.
You do need to show some type of medical proof, such as a letter from a doctor or endocrinologist using the term “irreversible”, or documentation of your surgery . The Family Court will consider your individual situation.
In the past, people who’ve had no surgeries but have been on hormones for a very long time have been successful when applying to change their birth certificate, as have transgender men who don’t intend to have any kind of ‘bottom’ surgery (genital reconstruction surgery).
The courts can apply the law to new and different situations over time, so you could still apply successfully even if no-one in your exact circumstances has been successful before.