Nursing increase at 18 months

My 18 month old went down to nursing just at sleep times (nap and night on weekends, just night on weekdays as I work). She has always woke at least once middle of the night and I nurse her and put her back to sleep quickly which she does great with. But now she seems to want to nurse more randomly, when I pick her up after work she will immediately pull up my shirt and say “milky” and sometimes does this random times of day too. She is generally a very good eater and drinks 1 cup of milk daily. I’m not worried or anything and I know it’s common for toddlers to wax and wane like this, but just wanted to hear any similar stories.