Posting for traffic partly.
My son is 3 and had been at his current nursery for 10 months. He only attends one full day and one morning a week.
He found it hard to settle initially which I expected, he is on the sensitive side. After a few weeks of tears I started a really strict routine each morning, as he responds really well to routine (not natural to me) including saying the same specific things at the same point throughtout the drop off. We read books about nursery and parents working. He stopped crying and seemed ok when I dropped him. All good.
This lasted a few weeks and then he started crying again at every single drop off. This was around April last year. In September they rearranged the rooms so he is now in a different part of the building with a new key worker. Since then he has become even worse. He is upset at home the night before, often upset in the morning, on the way, and hysterical when I leave. Sometimes he takes up to hour to settle and stop crying (usually much quicker) and is ok but not very happy throughout the day. In the evenings on these days he's really miserable and poorly behaved. He needs so much input and to be held and argues over everything. Nursery days he is noticeably different to normal. Last night he was hysterical for over an hour for no apparent reason despite me being with him the whole time. He just sat on my lap sobbing, totally stuck in a loop of crying and neither of us could do anything.
My younger son goes to a different nursery and has settled really well (hes generally a more boisterous confident child). They have space in their preschool room for my older one to move there too. He wouldn't be in a room with his brother but same building. I've hesitated to move him because he will start school next September and I don't want to constantly move him but equally maybe it's not him and it's just the setting isn't right. I don't get a nice feeling from most of the staff in his new room at the current nursery to be honest and I'm not sure they are as nurturing as the previous staff.
Would you move him in this scenario or persevere? The crying is every single day the only variation is how bad it is.