As being owned by an orphan foal, it is time consuming and tireing.
First I would suggest having the Vet to the foal to check the foal out.
You also have to watch for constipation.
Cannot slack on any feedings which is an hour to every two hours, night and day, round the clock.
Have help, you cant do it yourself.
If its cold where you are, make a nice place in the house.
I put Vet wrap on my foals feet and let him roam the house until I went to bed then he was put in the bathroom on indoor/outdoor carpet.
Every time he was fed, I picked him up and outside we went.
No messes in the house.
I fed him through the night, and when hubby got up he fed him for me while I could get some sleep.
Those links are great and you should do fine.
I bought my milk replacer from Jeffers and they do go through it.
Dont let anyone at any feed stores talk you into calf milk, it is not for foals.
Good luck, keep us posted and dont forget the pics.
Actually going on 6 years