He is flat wrong. Plus he is an adult (why does he need someone to take care of him, especially when his spouse is hurting from a very deep loss), seriously he needs to step up his game and be a loving husband (that means he needs to take care of you).
Even though you feel like you might want to be alone perhaps it might not be the best idea, but then again you might need to be alone for a bit. Plus Nanners and Kitt are right, perhaps some grief therapy whether it is group or individual might help.
Your husband is flat out wrong and frankly acting like a little kid with the me first attitude and I also agree with Kitt that it is abusive. I agree with Kitts plan. However some insight to his manner (and I do not know for sure) is that he might just not want you to hurt like you are. Kinda like he hates to see you in pain, and while he should be wrapping his arms around you and hugging you as much as you need, but he has choosen a rather maladaptive expression and behavior and I am sorry. You do need time to grieve and tradition holds that it is a year (but grief really has no time table) and while hopefully you feel better before then. He does need to give you that at the very least.
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But to help you directly I have a bit of an idea...
I have several brothers myself and I think about what they would want for me, when they were ever gone. Was there something special that you all did together perhaps when you were growing up? (I know this seems silly, but the only movie we could agree on when we were kids was Spaceballs, and seeing that would make me feel like I was spend time with them.) I know you are in pain right now, but perhaps doing something fun you two did together might help you a bit.
I think those we love never truely leave us, they just become angels we know.
Kitt is right too, come here and we will support you.