I'm having the same problem and would like an answer as well.
I already replaced them about three months ago, and the same one is leaking again. I paid about $150 to get the job done, but obviously the mechanic missed something and something's off with the fork. I just want to know if it's really something I can do myself. I'm honestly too scared I'll screw it up
Replacing fork seals is not a quick fix and will require the bike to have the front wheel of of the ground. There a a few DIYs on the subject, you may have to search around. One of the main reasons for leaky fork seals are dirty forks. Rust, bug guts, dirt, and rock/debris dings, over time can cause tears or nicks in the seals.