Having bf DD and found it luckily very easy I will aim to do so again with DC2 but I went back to work before DD was 5 months as DH and I shared the leave, so did a bit expressing/ mix feeding from 16 wks and then gave up at six months as DD wasn't interested in boob any more. So I wasn't properly tied to it for that long in the grand scheme of things and was lucky as it was easy.
However, I had a friend who was determined to bf and did for ages with her DD, but then had to give up after a few weeks with her DS as he couldn't latch properly and she was in agony. So I am fully prepared to try but won't be beating myself up over it if it doesn't work out - we have choices and we all have our family's overall well being at heart when we make them. Being stressed and made to feel guilty isn't helpful to our partners or our children, never mind us!
I will say one thing for bf and that is that it was a great excuse for sitting on the sofa for ages and watching box sets, being waited on hand and foot, and no one else could do it for me! Not sure that will be possible with a toddler though!