There are different types of weaning techniques. I always found Kellymom.com a helpful website;
https://kellymom.com/ages/weaning/wean-how/weaning-techniques/

I have no idea how much breastmilk you are producing. Is it possible that in your case the more your youngster feeds your supply stays the same or increases. You may need to find a way of reducing it so don’t suffer too much discomfort. I would make enquires if there is any way you can make your breastmilk taste different. Hopefully you can and may deter her. I never had that problem so apart from saying no and stopping her from attempting to do so I have no idea.

Not sure perhaps go cold turkey?

I had the same issue with my daughter, I tried everything…until my hairdresser told me what she did to wean her son. She told me to put bandaids on my nipples and tell my daughter that I had sore boobs. I know it sounds strange but I swear it worked…my daughter understood that bandaids meant ouchie and eventually didn’t ask anymore. A tip I wish I had received at child #1 not child #4

For my 2 year old I started by limiting how often he could have it. I slowly cut it back to just morning, nap and before bed. Then I cut the morning feed by distracting with breakfast. Then we talked about only having it at nap time and daddy would give him cuddles at bed time instead. Then I would make sure he fell asleep in the car at nap time each day. Distraction and keeping busy is the key at that age.

At this age, if you want to stop, you can stop. I slowly weaned my first just before her 2nd birthday. It’s not easy, I don’t know if you’re still doing day & night feeds, but tips I have for both:
Day – Give comfort, discuss with kid that he can’t have boob right now, but he can have… (& offer something he really likes). Distract, do a fun activity, get outside, go to the park etc. Do it progressively though, so 1 feed dropped every few days-week depending on how well he takes the change.
Night – Same thing, offer lots of cuddles. If he likes songs, sing, tell stories. Just try to keep a calm atmosphere so he sleeps.
You can start with day or night, it’s up to you and what works for you. Personally I started with day as my little one struggled with night sleeping, so I used breastfeeding to help her settle back to sleep. But when day feeds were gone, she naturally started asking for it less during the night and just wanted cuddles.
Good luck