Hi JTS,
I'm so glad your return to work has gone better than you thought. That's the first hurdle over. Like you I have no one to cover my work for me either, so that is an added stress. Just try to have a plan and a list and prioritise whatever is most urgent or important. Don't let it get to you too much though. There isn't usually much that can't wait a while and you are only human and there are only so many hours in the day. so just do what you can, but don't upset yourself over it and do ask for help if you need it.
It's still early days for you, so it is understandable that you are struggling. It is hard to accept that anything matters when you are so mired in your grief. I was the same and I am sure we are not alone. I didn't want to do anything either, no cleaning, no washing up, no cooking, no nothing! I would sit all day in a chair if I had nowhere I had to be without having washed or dressed and it would be evening before I knew it and I would have done nothing but think and cry all day. I think that's why I always feel now that I must remind those on this website to eat and drink properly. It is so hard to do that when you are feeling so low. you just forget to, but it will be no good if you make yourself ill by not looking after yourself properly, so do try to do that at least.
Don't worry too much about the house. You are the priority at the moment. If it gets to the point that it is unbearable, you will end up doing it, but a bit of dust isn't going to do you any harm!
As for sorting stuff out, almost a year and a half on from losing my mum, I still pull open drawers of her things intending to sort them out only to push them shut again, unable to bring myself to do it, so unless you have to for some reason, leave that too for now. It will take time to gather the courage to do it and if you make decisions now about getting rid of anything, whilst you are still so upset, you may only regret it later and feel you were too hasty in having parted with something, so take your time.
I hope things continue on a positive note for you. Try to stay strong and just take it a day at a time. That will be quite enough for now. Sending you a hug! Well done for making it this far! That's quite an achievement in itself, so stop being hard on yourself!