Feed, play, nappy change,feed sleep is our routine and it is all on demand.
I breast feed on demand my 4 month old DD and it works really well. It is determined by her in terms of sleep, but i control the rest.Is very good as she knows what is coming, and it makes it very easy to roughly plan our days.
I get her up, feed her until she has had enough on one boob (in your case, whatever you give her for a first feed, so say 100mls, just half a bottle) which usually takes 10-15 mins, burp her, let her have tummy time, time in her jolly jumper, let her play with her toys etc just whatever. If she is on the ground i let her have free nappy time which she loves smile
When she starts getting grumpy, which can be up to an hour after she has been up, i put a nappy on her, get any other burps she may have out and then put her on the other boob. Burp her after her feed, give her her dummy then pop her in bed.
After her first sleep cycle finishes, she will wake up and i just go and put her dummy in and she usually goes straight back to sleep, sleeping up to 2 hours. When she wakes, i just start again. Feed her, burp her, let her play until she starts to show tired signs, feed again, burp, dummy then bed. I never have her up longer than 2 hours, otherwise she becomes over tired and won't go back to sleep.
If she doesn't go back to sleep after her first sleep cycle, i get her up and start the routine again, but don't let her play for as long, as she usually is a little grumpy because she didn't sleep for long.
For night time (if she wakes up,we have been sleeping through the night since 6 weeks), i just cut the play out. So up, feed, burp, nappy change, feed, burp, dummy then bed. Takes no longer than an hour, usually half an hour.
Feeding on demand i fine is much better. You have control, but not full control. It is more relaxed i believe.
Hope you find what your looking for. Good luck smile