I'm sorry that your bfing experience has got to this stage.
How many times a day/night does she feed?
The easiest way for both your DD and your body is to stop gradually, over a period of a week or two.
The main point is to allow your dd to realise that she no longer needs to BF.
You can do this by replacing the feeds with suitable alternatives.
Start with the day time feeds, they are the easiest to stop.
Each time she tries to feed, consider what the reason for her asking is.
If she's thirsty offer a drink. If she's hungry offer a snack. If she's bored distract her with a game. If she wants mummy time give her a cuddle without bfing. If she's tired try to help her rest.
It's not so easy in this weather, but wear clothes that make your breasts as inaccessible as possible. Maybe something non-stretchy which cannot be pulled down easily.
At her age, it shouldn't take too long to convince her that she doesn't need to feed in the daytime. After only a few days she will probably stop asking all together.
The next easiest feed to tackle is the pre-breakfast one. (If she still feeds then) In that case you should be able to replace it with a cup of milk on mummy's knee. That way she still gets both the mummy time and the nutrition. Follow it with a prompt breakfast to get on with the usual schedule of the day.
Finally you can replace the bedtime feed in the same way. A cup of milk on mummy's knee. That will offer her mummy time and a drink, but obviously will not teach her to sleep without bfing. For my DD I had to cuddle her to sleep for a few days. I then used controlled crying to teach her to go to sleep alone. You can choose whatever method suits you, but it should be easier once she stops feeding.
I hope this helps.
Good luck!