I was lucky I guess once mine have the tape on they have always been able to start supporting themselves. This one that was a little more affected I had in a very narrow container with a folded hand towel that almost gave him no other choice than to be standing /supported upright.
I hatched his little guy out after his egg was left behind after his 7 nest mates hatched, and mamma had left the nest. His egg was quite cold when I found it, so I popped it down my bra and 24 hrs later he hatched. He spent his first 8 days in that tiny jar. I did take him out for little exercise runs in a small cardboard box. Once I knew he was strong enough I took him out to his mamma and siblings, he jumped out of my hands, hit the ground running and was completely excepted by all. Phew .......
I fed mine some egg-wash and bread with small bird seeds always scattered about for him to pick at.
I found some videos I had taken, here is a link for you to look at them hope it works.
Oh my gosh this is so helpful! My 2-3 day olds look just about like your day 2 video! The third one is much better (born Easter night). It gives me hope. I have been so upset. That is AWESOME you hatched that one in your bra! lol made me laugh. I SO appreciate you showing me these and your support. I'm going to try to take a video tonight and upload it to YouTube of these 3. Thank you!