Re: Starting Solids
As far as I can tell, the most common recommendation is to delay solids until the 6 month mark. According to my pediatrician, breastmilk or formula alone is sufficient to meet a baby's nutritional needs until the first birthday. After that milestone, it is normal for the transition to a majority-solids diet to be a gradual one, with many babies eating mostly mama's milk well into the second year.
Since your baby is still so young, I would hesitate to offer solids instead of either breastmilk or formula, because either one is going to have the right proportions of fats/proteins/electrolytes/etc., whereas a jar of baby food may not. If BM/formula is a full meal, a jar of veggies is equivalent to just one side dish.
That's not to say that you should change things- you need to do what works for your baby and your family, and I don't believe that there only one right way to do things when it comes to feeding solids.
Even if your pump output dwindles and you end up relying mostly on formula or solids, I encourage you to keep nursing your baby on demand when you are together. Your milk supply will adjust so that you make enough for your baby when you are together, and less when you are apart.
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!"