Hello, I am in the middle of this too with 16 weeks DS, I have just had The. Most. Hellish. Week of sleep deprivation coupled with running around for elder kid's end of term stuff and 37,689 (oh, all right then, 14) relatives wanting to have their share of baby time & swap presents (few of them drive, so I have been a very, very, very tired taxi imposing a 30mph limit on myself!).
I was on my knees last night and started to make top-up with formula/baby rice noises to DH, but have just had a slightly better night and am going to take each day as it comes.
I remember this with DD - the advice then was to wean at 4 months, and I thought baby rice would be the answer to all my prayers - it didn't change a thing in fact, just made for smellier nappies and made me feel even more "WTF can I do?"
So I am going to surrender, do a lot less, and watch loads of Christmas telly with DD while I breastfeed DS. You must do what is right for you, but if you decide to carry on, please know that you have a virtual partner out there sitting on her bum eating mince pies