I'm getting quite worried as to how we are going to handle this and looking for a bit of Mumsnet wisdom.
2.5 year old has been in nursery a few mornings a week since the age of 18 months. Always loved it and used to get excited and run around getting his shoes on to go. Now he point blank refuses to go. It's an entire morning of dragging his heels making every delay possible to get there and having a full blown tantrum about getting in the car to go.
He has been in a different room for a couple of months and he's definitely been more against going since then. Initially I thought it was just a matter of him settling but it's getting worse.
His key worker is amazing and if she's there he's happy and drags out coming home when I go to collect him but if she's not or in a different room he will go to the window and call for me and starts crying. 
I feel so mean leaving him there especially because we don't use it for work purposes, just for the social interaction for him really.
I'm also not sure if there's staffing issues going on because if it's anyone other than his key worker they will not know what he's been up to when I ask and just say a very broad "been outside".
DH is suggesting moving nursery but I'm not sure if this is just a normal phase that all toddlers go through or if I should be concerned?