I agree that as these LOs get older and until they're onto solids it can be helpful to not stick to a strict EAS pattern. Just make sure you keep something between the e and the s, eg a nappy change so that the child doesn't become reliant on the feed before the sleep. Alternatively, just go with it for a couple of days and allow the feeds to stretch a little more, if she's sleeping a bit longer it may only be 4hrs and a bit between feeds but if she's sleeping longer she may be using less energy than she currently is with a 45 min nap and more A time between each feed.