yeah sure why not? but dont do it just to "test" if your cock works. or dont constantly think "i gotta get it up!" that wont work either, itll have the opposite effect. just rewire your sexual response to the sense of real life intimacy, engaging with a person who have genuine sexual feelings for, as opposed to a screen. i found that rather than jumping straight in to the sex, it helped to touch and kiss first, when i could successfully get rock hard from that i knew i could get hard enough to plow her, without fail or anxiety. or giving her pleasure only helped too, like shoving things in her or performing other sex acts for her pleasure. either way, dont be obsessed with it and let it occur naturally