With clever use of game mechanics you can get 10k honor per hour (or even more depending on how much damage you can do). Basically what you'll be doing is farming the 3 rare elites in Krasaring Wilds which give 275 honor points each at this place (if you're Alliance): https://i.imgur.com/n4TaSEG.png. In order to see these mobs you need to complete the prequest for Dominance Offensive (Meet the Scout), or else you will be phased out.
What you need to do is get yourself ported to the "dead" server. I did this with my "other account" by making a new DK on a random dead german server. With this DK I whispered random level 90 germans "Hallo freund! Kann ich dir inviten für crossrealm? Kill rare mobs pewpew, danke!" and just invited them. After you invited someone you just invite your own character and there you go, kill and collect points!
Be aware that if you do this with 2 people you will need 3 level 90s of the dead server, else you won't get ported to the dead server. This is the reason why you should make a DK because level 1s can't join raids, and level 55 DKs can.
So in short:
- On your second account, make a new DK.
- On that DK, spam invite people (ask them politely duh). Make raid if necessary.
- Invite your own character/friend
- Kill and collect dem points
Thanks for reading, hope I helped you out!