Kanda is Lila really hungry before the feed? i find if i have had to make Molly wait (in the car or something like that) she crashes quicker, where as if i give her a feed as soon as she gets a bit hugry she will play for longer. Although sometimes this is a hinderence as she will be awake for 2 hours and want to play the whole time then want another feed!
What is your feeding routine like... do you demand feed or have set times?
I tried the set times for 3 days and it just didnt work for us, it buggered around with her evening and bedtime routine (feed, burp, play, bath, change, feed, burp, bed)
not sure if that has been of any help at all