Seeking God is never "for naught".
Keep knocking, and that door will be opened! Don't give up.
Like you said, your priest is most likely quite busy during Great Lent. Give him the benefit of the doubt, but, still....approach him, busy or not....he would be delighted to hear that someone is truly interested in joining the Church.
I have to believe that he would "never" say NO to your becoming Orthodox (unless for some reason you rejected the teachings of the Church). Have no fear in that. If he's a priest, especially in a mission church, his life's work is to grow the flock, to reach as many people, to save as many souls, to spread the Word as far as he can.
Maybe, he doesn't realize you are "serious" about it.
Go back to that door, and knock louder...and if the door isn't opening...go through the window.