I think once you’re financially prepared (and have given Leo some more time to bond), then you could do it. Birds are expensive. EXPENSIVE. I’ve spent at least $800 this month on vet care for my birds. You have to be able to afford the right cage(s), plenty of toys/enrichment, food, and vet care (avian vet). Don’t assume nothing will go wrong. And it’s only fair to make sure you can care and provide for another bird before getting one. And until you have your own funds, you’re having to depend on your parents. What if Leo (or another bird) needs the vet and they won’t pay for it? That happens all the time.
I’m not trying to discourage you from getting another bird eventually, just saying you should wait until you’re truly prepared.
My frightened bird and my traumatized bird eventually came around to wanting cuddles, but it was nowhere near 3 months.
And lovebirds tend to be great cuddlers, so I totally get why you’d want that close relationship with one.