I can't give you any benefits, but just wanted to share sympathy. DS2 is 15w now and though I've enjoyed it, I am wondering how long I can keep it up for. (Only managed 8w with DS1).
I do love the way he looks so comfortable and snuggles up to me and 'sings' to my breasts though... and when he notices I'm dropping off to sleep and bops me in the nose so I'll keep up eye contact....
fanny - you know the health effects, and you know that 'a bottle of formula' at four months will have a negligible impact (unless there are allergy issues). But you also know, I bet, that 'a bottle of formula' doesn't instantly make bf easier if it's not going well, and that if it makes you unhappy to give a bottle then why should you?!
If you can share why it is hard, then lets see if there's some real help for you
Yes, it will get a lot easier. If you give just one bottle at this point, soon you could start drying up and then on formula all the time with lots of sterilising and faff. My DD is now 8 months and in the last couple of months since weaning it is so much easier - 3 or 4 short feeds a day, now. I think the hard work now will pay off for the 6 to 12 month period at least in hassle, and increeased cuddles with your DC.