So sorry for your loss I was a young widow with 3 kids when it happened to me so slightly different challenges but I do understand your pain of how to figure out what comes next. Prayers for strength to get through.
I know how you feel, I've been there, so my thoughts are with you.
People fail to realise that the earliest weeks are not the hardest, you are surrounded by people and organising the funeral distracts you from so much. It was after the funeral, when all the family and not so close friends went back to their own lives that the reality of it all hit me. Sorting out the paperwork, bank accounts and other things were not what I needed. I was lucky on two counts, a wonderful friend and her husband got me through dark times and I don't have to worry about healthcare, costs or insurance as I'm from the UK.
Don't forget to take care of you, grieve your own way, not how anyone else tells you to. You will have good days and bad days, that's normal. Do what gives you comfort, I would take my lunch and sit by my husband's grave and talk to him, it helped me even though my family thought it weird, but, it was helpful and you do what helps you.
The time from the persons passing to their funeral is about them and making sure they get a proper send off. After the funeral people should remember the loved one left behind.
I am very sorry for your loss. I was widowed 11 years ago at age 57. As others have said, take one day at a time.
I don’t know how old you are, but has anyone mentioned SS Widow’s Benefits? You may qualify for some of your husband’s Social Security benefits at age 60 if you have not remarried. I did this until I turned 62, when I applied for my own SS benefits, as they were higher. It is something you should look into.