I breastfed all 3 of mine. The longest was my middle son who I fed for 8 months. All of mine were frequent feeders, usually every 2 hours during the day. The eldest & youngest slept through the night from 5 weeks old but my middle son would still want feeding every 2 hours during the night too! It was very tiring but you just manage (somehow!
I used to offer one breast at each sitting, then if they had been feeding for a long time (ie 30 mins) & stopped sucking but still seemed hungry I would swap over (that wasn't very often though). I've had mastititis & bleeding nipples too. Not nice but if you have the right support you will get through these hurdles. It is painful at times but it does settle down & you will really enjoy it!
Good luck & if you want to ask anything else (even if it may seem small or silly) just ask away! There's no such thing as silly questions! We were all in your position once & we all like to support each other here