Am I Too Late?

Yeah you might've messed up. I did too, dw. Since there is only one chance to get Chloe that we know of, I'd say spend apples if you need to, prioritise NP5ing Chloe. If you don't have any apples, just look at which missions give you her extra copies and do those as early as possible.

For now, just try to keep going with all the week one stuff you haven't done yet, and do as much of week two as you can afterwards. If you have the time, start spending apples the night before the event ends and try to get all the missions done. If you don't have that much free time, spend apples earlier.

Yeah you might wanna spend apples right about now. A few of the extra copy missions are pretty straightforward but one requires you to beat the final Raid Boss and another requires finishing 90 missions

That’s the biggest hurdle. You’ve still got about 6 days but that pretty much throws you into overtime unfortunately :/

How come? I mean the event is way too easy. I didnt use any apples and still have some leeway at the end (well, lv up once). Consinder the way you having trouble with this event, i assume youre still low level right? Then on the way clearing the event arent you atleast lv up once or twice? That would be enough to complete the quests. (Sorry for my bad english)

Chill dude, what level are you? If youre in the 60s you get so much AP of clearing EX missions it's ridiculous. I have to use about 400-500 AP a day without apples.
If youre a higher level than me, then your apple efficiency is way higher than mine.

There's a complete walkthrough which tells you how to clear the event the most efficient way. iirc you need 1300 AP for first week missions. If you cleared 50/100 you're good to go. You definitely have to use apples though if you wanna max out Chloe. There's also 6 days till the event ends, which means you have at least 1500 AP left till the last day without apples.

then use apples

There are also some missions that are not required to finish unless you really want the last lore piece. I finished the main quest 20 minutes ago and got the last Kuro card, but I'm stiĺl 96/100. I still have to kill 11 snowmen, 4 Lancers and 4 Assassins, so at least those missions are skippable.