I nursed both my kids, until they self weaned.... but with my daughter, I verbally prepped her about it.. so that in time, she understood. She self-weaned at about 2.5 years old, on her own. She literally told me one day "I don't drink (from you) anymore, I"m a BIG girl!" And she even thought it was "silly" that she "used to" nurse. LOL
Anyway, what you can do is, ONLY nurse her IF she asks.
Sure, you have a routine with her now... but she may surprise you.... and perhaps, she may "not" ask to nurse at certain times... as has been the "usual" routine.
That is what I did with my daughter, gradually... so in essence, this was going by HER lead and not mine or "my" routine with her. And sometimes she'd just not want to nurse.
then you can try substituting other things, in lieu of nursing before naps/bed. OR, again, only nurse her IF she asks. Distract her. ie: for me, when my daughter would want to nurse and she was 2 years old already... I would say "Okay hang on, I have to do laundry now...." (or some other thing) and then I'd STAY standing, busy myself around the house... and NOT sit down. THEN, within like 1 minute, my daughter would "forget" she even asked to nurse.
OR, CHANGE the routine. For me, I gradually just changed the venue for "where" my daughter nursed... I did NOT do it in bed, lying down. ONLY, in a specific chair. Then after she was done (by that time she only stayed on me for like 1-2 minutes then off she went), we did OTHER things... not sleep. We read, talked story, cuddled etc.
My friends, used the Band-Aid method, and it worked for them!
But for me, personally, I used a combination of talking about it with my daughter, and distraction. THEN, she self-weaned herself and cut down on nursings on her own. And she just stopped herself one day out of the blue!
AND, try giving your daughter a "lovey" to sleep with...
She may surprise you, and drop "feedings" herself. Mine did.
All the best,
Susan