No friends at kindy

My DS who has just turned 4, has been at kindy since Feb this year and he still doesn't have any friends there. He is quite a shy little boy but boisterous as ever at home with the other children, two of whom are his best friends (I am a home-based carer). He does adore two of the kindy teachers though. But it just breaks my heart the thought of him being friendless. As a result I am pretty sooky about taking him to kindy. He usually doesn't want to go, and while I always encourage him to go, if he is really upset I don't make him go. He didn't go all this week cos he has a chest infection. He has now gotten into morning kindy 5 days a week which terrifies me. He starts in September and the thought of it has me in tears. Pathetic I know. But when I was a child, I didn't really have any friends for my first year of primary school and it was awful.

DS1 goes to montessori where he calls anyone who talks to him his 'friend'. Yet he is still not at a stage of playing with kids, simply preferring to do his own thing. He's 3 yrs 8mnths so maybe its a age and stage thing.

sarah never really had any friends at kindy either, shed kind of just talk to anyone really or just do her own thing, i think kindy is alot different for making friends than school , as at school there kind of forced to with being in the same class etc but at kindy they all just really do their own thing.

you could help encourage him when you drop him off tho i guess if you said something like " ohh look what that boys doing/painting/playing" whats his name? he looks like a friendly boy,why dont you ask if you can join in?"
theese are the kind of things i said to sarah to encourage her, i also found as horrible as it was if i stayed because i was worried she was more focused on me than anything else.

even have a talk to the teachers about it and they will try and make sure hes having a good time and try and encourage him , they come accross things like that all the time (so my mum says)