I always offered both sides too but they only wanted one side per feed, pretty much from birth so let bub guide you there and just keep offering. As for sleeping, I found that the more they fed during the day, the less they fed at night - but again it really depends on the baby, mine cluster fed from 4-7 ish each night early on as well. I also found even if I left them they wouldn't' sleep for more than 4 hours during the day generally anyway but if they did on occasion they would have a big feed once they woke up. I can't see how old your bub is though hun, if she is under 6 weeks old though I would be thinking that 4 hours would be a limit and would be gentle stirring at that time for another feed if she hasn't woken. HtH. xoxo