Sappholit,
I also apologise if I came across as stroppy. I see some really awful attitudes to babies in my work (last week I heard a mother tell her 4 week old baby she was "annoying" because she was spitting her dummy out and crying in her pram. I had earlier seen her feeding the baby without taking her out of the pram. ) and this is a bit of a trigger subject for me.
The long and the short of it is that if you learn about the needs and natural rhythms of your baby you will be able to predict what she is likely to want next, without a "routine" as such. Watch for feeding and tired cues; crying is the last feeding cue, mouthing, tongue pocking out, grunting, arm & leg waving are all feeding cues, if you respond to these you'll have a much more contented happier baby than if you wait til she's crying. The same with tiredness. The majority of babies feed off to sleep at this age, it's normal, natural and not something you should worry about. Don't forget that feeding is everything to a tiny baby, calories, fluids, security, comfort. (which is why the sight of a baby in a pram being given a bottle without being held and cuddled really makes me sad) Babies all have tired cues too, grizzling, head scratching, ear pulling, eye rubbing, yawning, all are sleep cues, if you rock, feed or put your baby in a sling when you see these she'll almost certainly nod off.
Just don't stress about the little things. Life will never be as simple and predictable as it was Before Baby, it's a nasty vicious myth that things ever get Back To Normal, or that you Get Your Old Life back. You don't. You are now a Mother, and your life is different. Embrace this change and find a way to do the things that matter (like cooking, shopping, eating, washing) and allow your priorities to change. Right now you are still in the period of adjustment, the first 2 or 3 months are chaos, she'll have a big growth spurt in a week or so and you'll think your milk has run out and that there's something wrong, but all you have to do is go with the flow and feed her on demand (which will be almost every 20 minutes ) and in a few days things will calm down a bit and you'll feel like you've sussed it. But don't try to predict too much, wait and see what each day brings you and react to each change as it happens. You and your baby will both be happier for it.