Baby sleep/eat patterns

Sogol
My LO is now 7weeks old and last night, she slept 2 x 4hour sessions - the second time she woke up at 3am, and ate, but didnt fall asleep till 4:30 - we woke up at 8.. So she went about 5hours without eating.   She had two wet diapers and one big poop -  curious is these are all signs of her sleep pattern changing?   Or should I be worried that she went 5hrs without eating!?   Anyone else experiencing the same?  Btw,Im breastfeeding.  Thank u!