My tiny chick J is still alive

J is looking a lot better, walking great, peeps very loudly.
I got J to eat some yogurt last night, I thought that was important esp. b/c of the huge hernia when hatched which looks fairly well healed now.
But I have never had a chick this tiny! I gave soft cooked egg today and it could not bit off a piece, I had to feed it a spec so small I could hardly see it on my finger tip.
I guess this chick might be about the size of quail? Have any of you ever had such a small chick? How do you feed it? The normal chick crumbles just look way too big & dry.
The specs of egg it took were like 1/4 the size of a crumble piece.
I'm working on trying to arrange to get it a small chick friend on or before Sat when I need to take it away from the duck eggs b/c they will hatch like giants compared to this chick.
Right now it is still in w/ the 1 chicken & 5 ducks eggs which it is snuggling w/ & peeping to so that is giving it some comfort I think, but then J will need a friend and I have little hope that
my odd oval chicken egg will hatch when the great looking 10 eggs w/ J all failed.
Any advice of feeding a tiny chick?
Thanks
Fey Raine