Making baby food

I’m a little early with this but I want to get my mindset right so I can be prepared. I want to make my baby’s food when he starts eating solids. He’s 4.5 months right now and not starting until he’s 6 months, possibly 6 months adjusted because he was premature. So looking at sometime around Feb 29th-Apr 12th depending on his readiness.

I have absolutely no idea how to go about it. I know you only introduce a new food every few days or one a week depending. But I don’t know how to start. I plan on starting with veggies the first couple months. Do I just buy a couple different kinds of fresh veggies, bake, then put in a blender? How much do you make at a time so it doesn’t go bad but you’re not having to make food every single day? I’m sure it’s not complicated but I feel so dumb about it.