I've been away from WoW since about 3 months after the release of Legion. I got my undead DK to 110, reached around 870 ilvl (IIRC), and then just lost interest. I want to come back and level up my alliance warrior the rest of the way, but I've heard bad things about the current AP grind. I've also been told/read WoW is now harder than ever when it comes to keeping up with the current meta.
I'm not really all that concerned with being the best of the best on my server, but if I am hopelessly behind I don't even want to bother attempting to catch up. I don't have a lot of time in the first place, so if the AP grind and everything else are just too much stop me now before I get myself in and end up being disappointed. I am basically going to be a fresh 110 starting late in the expac, so give it too me straight. How much dedication and time will it take to reach the meta and be considered "caught up" gear and AP wise?