Brake Fluid Change on ‘21 M760i

My ‘21 M760i is due for a brake fluid change in March. I’ve never done a brake fluid change but I’m wondering if I should give it a try. I’m considering buying one of those devices that hook up to your brake fluid reservoir and push fresh fluid into the reservoir as you bleed fluid out at awheel. Anyway, any words of wisdom for me? Is it so much hassle that I should just pay the dealer to do it? Thanks in advance.