Look - here's a radical idea :
Forget about trying to get your baby into a daytime routine and just focus on the stuff that's really getting you down - the frequent waking at night.
Carry her in a sling, one that's comfortable and hands free and just accept that this is what you need to do at the moment, because this is what she needs at the moment.
She'll drop in and out of sleep all day and you will be able to respnd to feeding cues before she gets frantic.
At night, do whatever you need to do to make night wakings easier and settling back quicker. Waking 2 hourly is not off the scale for an 8 week old by any means, but if you stop fighting her needs in the day, you may well find the nights become easier to cope with....
I can hear a panic in all your posts - 'OMG I am losing it, if I don't do X by Y o'clock, the whole day will collapse and I am so tired and oh bloody hell, the baby's woken up, and is that the phone, and my other kids need a story and a chance for mummy time, and oh no, I have got to do Z and if I don't do Z followed by A and B and C, it will be D o'clock and I will really have lost it then........'
A baby who only wants to feed and be cuddled can be the easiest element of all this, truly. And if you allow yourself the indulgence of not trying to fight her in the day, nights may well fall more easily into place.