My 19 month dd is still on the breast, and sinc...

My 19 month dd is still on the breast, and since becoming pregnant it has become more harder for me to settle her, especially at night. I have tried weaning from early on but all failed! Feels like ive tried everything to get her off breast to settle her at night, but she still wakes up throughout the night. We try cuddles, carrying around, patting, prety much everything but she'l kick and scream no matter how tired she is until i give in to b/f. Ive tried letting her cry it out but that could last for hours. Im in desperate need of advice on best to wean and settle at night.