Keep things stress free - milk is the main source of nutrition right now. I'd suggest avoiding using the pouches as the way the food arrives at the baby, which has the effect of training them to expect food to come directly from packets (which, of course, the giant processed food businesses love). I'd also suggest modelling eating a range of home-produced finger foods (e.g. cooked veg sticks / florets, green beans, fruits, bits of meat if that's part of your diet, etc.), talking to your baby about the food, its colour, texture, how it's grown, what country it has come from, anything you can think of, really. Food and conversation naturally go together, and talking about food is apparently one of those habits that helps to support a healthy food environment for children.
Babies often try to copy what they see their family and others around them doing, so have a think about what he's seeing and what you can do to model the behaviours you want. It doesn't need to be complicated, e.g. my son was mesmerised by simple food prep - watching me chop up fruit, 'helping' to put the chopped up fruit into a bowl, and so on. Hold him whilst you're eating your meals. If he's seeing you repeatedly taking food and pop it in your mouth and look and sound like it's pleasurable, he might feel intrigued enough to try to copy this. Good luck - it's easy to get stressed about food, but right now, there isn't a problem - you have a seven month old in the early stages of learning about and trying new foods, and he's getting what he needs nutritionally from milk.