Hi Everyone

So I have 5 babies, 5 weeks old and playful. They have been testing their wings for a week now so know they're getting ready to fly, but i'm very worried as their nesting box is about 4 feet from bottom of cage. Do I lower it to bottom of cage till they are flying properly or leave it to parents to teach them and hope they don't drop. I take the birds out every day to play, and i've been hoping they would fly off from my hands, just a foot of the floor but they balance on my fingers and just flap their wings but won't jump off yet. Don't want any to fall and really get hurt from the nesting box. Any advice would be appreciated.