In my case, while I said I'd be more casual with the game, I'll just pour everything I could onto Castoria, which would be around middle of the year. I'm not rolling anyone or anything until her banner, not even Event CEs. So far I've got 500 Quartz + 60 ticks, aiming for around 600 Quartz + 100 ticks to reach that pity, with maybe less ticks and more Quartz than calculated. There are several Servants that I've lantern'd, and I'm gonna max them steadily.
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I'll get a payback from previous Anniv.