you catch him in mid air? No wonder he screams.
Oh dear, oh dear, where to begin...
I'm no expert, I have to say that pretty clear. But grabbing him in mid air doesn't seem all that constructive, in fact it sounds rather awful. Violent. And I'm fairly sure he does NOT like it, so no wonder he retreats to higher ground and will not come down. I would think that you'd want to build trust, but what you do is the exact opposite.
I am fortunate to have two darling handraised lovebirds, with whom I have built a really good relationship, they almost always come when I call, and I never use any force with them. But it didn't come out of nothing either, it was a lot of work, a lot of time and not least, a LOT of patience. What you need to do is start training your bird. Start building trust, so he will come down when you ask him nicely. Offer a treat, so he connects doing what you ask with getting something yummy. Parrots are smart. They have a pretty good learning curve, if they feel you can be trusted, and they will learn from you. But it will take time, a lot of time, and a lot of effort. I hope nobody ever promised you that you could tame and train him in a week.
You will be able to find training advice here on this forum, you can probably find it in a book or in a video, or you can consult a pro bird trainer. There are plenty of options.
Clipping wings is NOT one. It's not training. It's not trust. It's just limiting his movements. And for what? What happens if he's out and the door is left open and the cat or the dogs get in? You will have removed his only means of escape. I shudder at the thought. You can read a few threads on this forum about this happening. Stuff of nightmares, I tell you.
I ask you again. Nicely. Please do not clip his wings. Please.