Hi Jannette, I have a 5 1/2 month old who was weaned a month ago, she is my first foal so I'm not an expert - just thought I'd let you know what I did with her. It seemed to work. When I took her dam away, I got my most gentle gelding and put him in with the foal. They became buddies, so then I added my next most-gentle horse. The foal had a couple buddies before I put her out with the herd (it's a small herd); so the aggressive horses didn't mess with her. Everything has been fine! So maybe if you have room in the round pen, or if you could use a small field, to add a mare at a time until the foal has some buddies, that would work. Good luck!