Your previous routine looked really good in terms of structure, and it kinda doesn't make sense to me that dd's sudden issues would be about something being wrong with it, so I'm not sure why you think that reducing no. of bottles/milk intake would help her?
My los always go off their food/milk if they are poorly, it's how I know they are really unwell, not just a bit unwell, so if you think that dd might be developing an illness, I'd just let it all go until she's over it, and then try to reinstate your previous routine - I'm always a bit wary of dropping bottles, not only because milk remains the primary source of nutrition until 12 month (a minimum of 20oz per day), but also because 4 bottles per day provides a really good structure:
morning milk
solid breakfast
mid-morning milk
solid lunch
mid-afternoon milk
solid tea
bedtime milk
if you do want to reduce milk intake, I'd drop oz per feed, rather than whole feeds;
I also wonder whether she might just be having a growth spurt? My dd1 is suddenly eating masses again after a few months of disinterest in food, so I put it down to her sudden rapid height increase giving her a bigger appetite!
Sorry it's difficult at present, I will make my mod colleagues aware of this post to see if anyone has any other suggestions.
Ax