Yes, use the following link and remember to stay on 11.2. Do NOT use this with 11.3 or 11.4. If you've already got CFW, it's quite easy to downgrade to 11.2 (I've personally done it).
https://gbatemp.net/threads/tutorial-using-luma3ds-gateway-on-b9s.431691/
Thanks but now that I think about it, discarding the Gateway all together will be the best option for me, I guess.