Weaning 2 1/2 year old!!

Does anyone have any suggestions to help me wean my 2 1/2 year old daughter off breastmilk?

She only has it twice a day because she still wants it for nap time and bedtime but after she falls asleep, she sleeps through the night without it or for her whole nap time without it. I’m 17 weeks pregnant with #2 and I’m so over breastfeeding 😪 anything helps!! Thank you!