Hi,
At your age baby needs nutitionally dense foods. Fruit and veg are good, but kinda diet food - he needs a range of foods. Is he eating well now? I think he had some challenges?
if all is going well he can have everything. it's important you start meat pretty soon. Prem babies often have compromised iron stores. Chops to suck on and gum are great. A dollop of Spathetti bol souce in his veg or some meat from your slow cooked casserole. Cheese and yogurt are good. Baby led doen't mean "thou shalt never eat off a spoon" - that's crazy. It's about responding to baby's needs. If it's a good you would eat with a spoon or a fork then they do too If it's a food they can pick up with their hands then that's good.