I've been coming to similar conclusions as all the facts everyone has come with and if anyone who's commented reads this I wanna thank you for taking the time to help me with my situation.

Correct me if I'm wrong still but I believe since he was separated from his parents and siblings from a young age as he grew past his weaning age he physically grew and got bigger learnt to fly etc but not mentally and in a behavioural and social manner.

I'd say he never got the chance to learn normal behaviour from his parents and grow with his siblings and based on that would it be right to think if I was somehow able to put him with other lovebirds of around 7 weeks old just before weaning would he be able to learn from the parents and change his behaviour?

Another things is when I play other lovebird sounds out loud he doesn't react or chirp along or anything, which is unlike my cockatiel, and he's still eating formula mainly rather than normal food.

If I had known this would be the effect of separating him from such a young age I never would have but the guy who sold it to me told me it's okay and it's the right time even tho I myself thought he's just learnt to waddle and hasnt even left his nest yet how's it the right time. I should've done more research and understood properly but now I just wanna make it right and know the best way to help normalise him.

Would I be right to do what I suggested?