DS will soon turn 4. He's been going to nursery since he was 1 and adjusted quickly and well. He generally liked going to nursery, had good relationships with other children and nursery workers and all the reports we received were that he was settled, happy and sociable. He is now in the preschool group.
A couple of weeks ago we got back from a 2 week holiday which coincided with his nursery best friend leaving for another childcare setting. He's been devastated about going to nursery ever since, very tearful in the morning saying he wants to stay with mummy and daddy, and unsettled throughout the day which is unlike him. In the evening he asks for reassurances that he won't have to go in the next day 
He says he would go to nursery if we went with him, so it's not the nursery itself that's the issue.
He's not due to start reception for another year but we are moving him to a school nursery in September which he sounds fairly excited about.
But we have about a month to go at this place where now there's a turnover of kids leaving for other settings, including his best mate who he was very attached to, and I'm not sure how to help him handle it.
We can't afford to keep him at home and have no family close enough to help.