How long to let 8 week old sleep for.

[Chickenfillets]

My 8week old ds currently sleeps from around 10/11pm until 4/5am. I always have to wake him up for his last night feed, as from 8pm he's always fast asleep, takes me a good half hour to wake him up, but now a few people have been telling me to let him sleep through from his 7/8pm feed. Is this ok to do? Im worried that he may sleep too long without having a feed. Either that or he will wake up about 2/3am and that's not something id be too happy about I know I'm very lucky that he sleeps through already and I'm happy enough to keep it this way, but is it really necessary to wake him?

Oh thanks. He's definitely getting enough then

My ds is 20 weeks and only has that amount but on the hungry baby milk

All sounds good, my dc1 was the same the only thing I can say is don't have any more children! My dc2 was a nightmare with sleep and my dc3 arguably worse again!!!