Hi,
As babies get older, they sometimes have bumps in the road due to developments too. Is she able to put herself to sleep?
I would just go with the flow and try to follow EASY as much as possible. Until the 45 minute naps go away, you might end up having 2 short naps inbetween feeds ( which may space them out 4hrs..I would wake when it got that time). As long as you are not feeding to sleep, you may have to tweak a little bit. Eventually things will (should) fall back into place. These little bumps can sometimes last a couple of weeks