I don't have a single awakened unit on DMM lolix, and i would have managed a 3* on the very last map if i had one awakened tank and the rest non-awakened (judging by a youtube video, but i did not try the map, felt unnecessary since i had the 22 stars i needed). There are both hard and less hard events along the line but for farm events you do not need awakened units to get the best farm area and it should be the same for collection events.

The hard parts come after, for those really wanting a challenge etc. Those maps tends to grant fairies and exp armours as extra rewards, but not really affect your grinding otherwise.