yea maintenance takes A LOT of getting used to since nearly all of us have never been in this position before - or haven't in years. I was always gaining weight or trying to lose weight the whole time I was obese.
if you are maintaining on your current level of calories, then stick with that until it's no longer working - and then adjust up or down as needed. Calorie levels change if your activity levels change, or as you get older, or whatever. What I did for a long time was set an "oh crap" weight (for example, 160 lbs) and once I reached that, it was all hands on deck until I was safely back in my safe zone again. So something like that might work for you, too. But yes, maintenance is definitely hard to get used to!