Re: How many...
There's no hard and fast rule about how many times a baby needs to nurse at that age. However, IMO it should ideally be about as many times as before you introduced solids. Since you want the baby's primary source of nutrition to be breastmilk, with solids just for exploring new tastes/textures/motor skills, I think it makes sense that you'd want to keep the total number of sessions similar. Though of course as time goes on your baby may drop or add nursing sessions, depending on his needs at the time.
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!"