you mean like hormone medication? hormone replacement therapy? the first part of a transition to ease gender dysphoria, and the only transitional treatment some trans people even make?
the problem with this idea is that wanting to medicate away dysphoria means wanting to medicate someone into being comfortable - to some extent - with their assigned gender. which is a step towards wanting to medicate away transness - not saying thats what youre saying, i know youre not, but if we began 'curing' dysphoria by making people comfortable with characteristics not associated with their true gender, thatll really put the wind in transphobes' sails.
the real nonsurgical way to get rid of dysphoria is to change society so that genitals and secondary sex characteristics arent associated with gender. until breasts =/= woman, for example, most trans men will still want a mastectomy (and they should be entitled to it). i dunno if dysphoria would still exist in a more gender nihilist world, but i certainly think if your body doesnt need to be a certain shape for your gender to be taken seriously, dysphoria will be less prominent.
though besides dysphoria, theres other reasons trans people might want surgery; in some countries, trans people cant get legal recognition of their gender until they have bottom surgery / 'sex reassignment' surgery. other surgeries like top surgery and facial feminisation surgery can be about passing; less how you feel, and more how others receive you. plus, after a few years on T youre gonna wanna get a hysterectomy, bc some studies suggest that trans men have a higher risk of... cervical? cancer. smth to do with all that stuff down there.