Ground hog 2 hours

1KB is on a two hour cycle. From about 7am she eats, plays, screams and sleeps in a two hour cycle - sometimes on a really good day we can stretch it to two and a half hours. You could almost set your watch by her. She will appear to be sleeping soundly but bang on two hours since her last feed she will begin to stir. If we go out for a walk or in the car she will sleep for longer however I don't always want to go for a walk every two hours.

I need to do something to elongate this cycle but I've no idea how - any suggestions? I feel like I'm living in ground hog hour over and over again the same happens.