good and consistent sleeping hygiene is a very good way to raise the chances for recall and lucidity but its not like you cant lucid dream if you dont.
and i think that as long as you get to bed +-same time and wake up same time and its dark while you sleep (sleeping mask in the morning maybe?) you should be fine because then you still have a sleeping rythm but just not a "normal/typical" one.

when you change your sleeping schedule there will be some days of reajustment and therefore a temporary fall of recall and awareness is possible but not necessarily.
so if you are really into it and dont see it as a big problem you can try to go to bed before midnight and get up a little more early but if you feel comfortable like it is or you depend on this sleeping schedule i wouldnt worry to much as there are different things that are important to get lucid you can focus on