Re: how long between feeds
You're not alone in having a baby who needs to feed frequently. Breastmilk digests in about 90 minutes so young babies typically feed every 1.5 hours- at a minimum! Once in a while you'll run across a baby who naturally feeds every 2-3 hours, but in my experience they are rare.
The good news is that babies do tend to space their feeds out as they grow, and those feeds also get a lot shorter as the baby gets more efficient at the breast, with many babies getting a full meal in 5-10 minutes by the time they are a few months old. Once that happens, feeds are a lot less work, because 5-10 minutes of nursing every 2 hours is a lot less intense than 15, or 20, or 30, or 40 minutes every 2 hours!
The bad news is that there's really no safe way to get a baby to space her feeds out until she's ready to do it on her own. Supply = demand, and babies who don't get enough chances to demand can't ensure an adequate supply. And you never know when your baby will start spacing her feeds out- it could be tomorrow, it could be 6 months from now.
A lot of moms find that it's challenging to breastfeed a new baby and care for an older child. You might want to make a special toy and books basket that only comes out when the baby is nursing. That way nursing time is special for everyone. You might also want to try nursing with your baby in a sling- that way you can move about and help your toddler while nursing, instead of being stuck in a chair.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"