Feeding routine

Hi guys I just wanted a bit of advice about how often etc you guys are feeding your babies. With my 3 yr old I stuck with a 4 hourly routine and before she was 3 months old she slept through the night and this helped form the routine. For bed time I had a very clear bath, bottle and bed routine and did this every night. She too had reflux but her symptons were more that she was very sicky and didn't always drink a lot. With this baby who is currently 14 weeks I was feeding her every 3 hours because it was taking an hour to feed her. Her reflux symptons seem alot worse however and this seems to be affecting any kind of routine that I want to implement. This one cries alot when it comes to being fed and then when I get her started she doesn't drink alot. I would then leave it for a bit and try her again (within the hour allowed) most of the time she cries and screams again, sometimes she will take some more. Bedtimes seem to be a nightmare. Essentially I would like her and my older one to go to bed somewhere between 7-8pm, I have taken to bathing her in the morning because although she likes the bath she screams blue murder when getting out, so I have taken that bit out of my routine. However, because of how the feeding pans out during the day, which is all very random, its often only a few hours after her last bottle and therefore she not hungry enough to take anything or just a little for what should be her bedtime bottle. I can't really keep her up later because she seems to really need to go to bed at around this time. I don't know whether to try and wake her up at a certain time in morning and start with a 4 hourly routine like I did with my other one. I really seem to have much less confidence and knowledge this time around when it should be the other way round surely??? As I seem to be totally clueless I wonder if people could give me some advice. Tonight I have put her to bed without a bottle and plan to go up in a little bed and see if she will take a bottle whilst asleep. But again this takes away the next part of forming any kind of bedtime routine, but don't know if I am just getting too hung on on a routine, its just this has always worked well for my older child and was keen to continue this with the new one. So sorry for rambling...