Judaism’s position on the question of freezing/suspending life

This is a case of a terminally ill patient who wants to be frozen while still alive in the hope that in the future they will be able to find a treatment for his disease and then he will be thawed and treated, for example a brain cancer patient who wants to be frozen before his brain is destroyed.
At the moment this is still a theoretical question but research is being conducted on the subject. (https://www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/Hibernate_for_a_trip_to_Mars_the_bear_way)

I think there is no prohibition on this, since in simple terms freezing is not death but more like long-term dormancy. If it is a healthy person, there is room for debate, since in the frozen state he cannot do anything and at least de facto it is like death. But in a terminally ill patient whose goal is to try and gain life, as they allowed him to undergo a dangerous operation to have a chance of saving his life, it makes sense that they would also allow him to freeze himself for this purpose.