Minoxidil is pretty hit or miss for some people, but I don't think that's any different than when cis men use it; some report the growth recedes after stopping treatment, others report that it doesn't, and it's all anecdotal anyway.
I recommend you talk to your doctor about it (because it is, first and foremost, a blood pressure medication). If you think it's worth the money to try it, even if it partially/fully recedes after stopping, go for it. Nothing ventured, nothing gained, and all that.
Also, because it hasn't been mentioned yet, Minoxidil and other hair growth serums can be toxic to pets. If you have pets or interact with animals frequently, I'd research how to prevent unintentional exposure. I'd give Minoxidil a shot myself if my cat didn't like rubbing her face against my beard so much.