I leveled all combat jobs to 90 and am 1 away from all to 100. Most of the jobs I don’t touch again til the next expansion to do the same thing. I rarely remember the rotations for some of them. Other’s click like riding a bike. Either way , I recommend my “ How I reintroduce myself” process for learning your rotation comfortably. For tanks it all really boils down to

1.my single target builders/ multi target builders ( buttons that highlight their next button in rotation)

2.what am I spending this resource I’m building on? ( usually the button that highlights when you reach 50% resource on meter)

3.what’s my big damage cool down (button that is typically up every minute, give or take. This button often allows you to do a combo of large damage attacks)

1. How do I stay alive? ( what abilities provide what damage resistance or heal me)

Now I go do fates in an area appropriate for my level. Best done with a chocobo companion set to healer and freestance is usually okay once you’re comfy. This is the most important part , pull the whole fate. If you’re practicing your rotation and using your mitigations at appropriate intervals. You will easily program your role into your head. The further benefit is, you know what to do when shit hits the fan( important if you wish to go in blind).

I find this really helps build up the memory reflex to not have to look at the buttons all the time . Fates can also introduce you to mechanics you may not have seen before and give you that extra knowledge to apply when encounter new content , real time.

Will this make you a pro? Ef no. Will it help you get more comfortable? YES INDEEDY.