Please share your thoughts on these provisions
I do not think it is necessary for a person to ‘prove’ their gender identity. Self-declaration should be sufficient. I do not think it is necessary to make people wait for 3 months before they do this. Many people will have waited a long time, reflecting on their sex/gender identity, before they apply to make a declaration.
I do not believe that a declaration promising to live in that sex/gender is necessary either. It might be that in requiring this the state aims to give the idea that a change to sex/gender must be permanent, but I do not believe any aspect of human identity is permanent, and requiring people to sign such a declaration ignores this aspect of human experience. Many trans - and cis - people do not see themselves as having a shifting sense of sexed/gendered self. But some people do experience themselves in that way; in my research I have found a certain degree of flexibility in people's sex/gender identifications across their life courses between being cisgender, transgender, non-binary or gender fluid. Therefore I do not see any reason why sex/gender has to be 'locked down' for a whole lifetime 'until death'. For a long time we took the view that marriage had to be ‘until death do us part’ but we now allow for divorce. In other words, we should allow for even very significant choices to be reversed.
It seems unnecessary to enforce upon people a permanent adminstrative categorisation that does not acknowledge this. Those who want to remain in that sex/gender will do so, and those who do not, will not, regardless of such a legal declaration. Such a requirement might also inadvertently support conversion therapy treatment in the circumstances where someone wanted to re-think their sex/gender identity after signing a statutory declaration of permanent intent.