It depends, for you breastfeeding it’s better to wean gradually so you don’t risk mastitis. If your baby is over a year you don’t need to wean them onto a bottle as they only need breastmilk/formula for the first 12 months.

You might find this article helpful
https://kellymom.com/ages/weaning/wean-how/weaning-techniques/

There are different ways to do it, I gradually reduced but some go cold turkey

I did it unexpectantly and my bub just coped. They were a bit fussy for the first 3-4 feeds but then just accepted the bottle and ran with it. It was a bit stressful doing it that way and I’m glad bub was a bit flexible with it all!

yeah i have done it slowly and they get used to not having it.

I did it gradually, week by week slowing reducing feeds etc. 4 feeds to 3 feeds to 2 feeds to 1 feed a day to 1 every second day to 1 a week to nothing. It is what worked for us!

Really it depends on your baby. But we did it slowly. For my comfort as well. Taking them off cold turkey will be painful for you. But we just changed 1 feed a day from breast to bottle and every couple of days dropped another feed. I always left the night feeds until last. It seemed to work well for us.