3 months is no time at all. My son died nearly three years ago aged 18 - I'm still in shock, disbelief, angry, frightened.
I do work full time now but I'm not 'better', 'back to normal' or any of those sayings.
Sometimes I barely exist. Sometimes I enjoy myself. Sometimes I feel numb. Sometimes the anger is overwhelming.
It's a roller coaster of emotions and I'm sure it will always be thus. How can it not be when your child has died?
You learn to live with grief walking beside you. It's not easy, it takes time, you go back and forth thinking you're coping and then you don't.
I can appreciate things - the sun on my face, walking in the snow, delicious food. But I'd still always rather be doing these things with my son alive on the earth somewhere.
I live for my other son, for my family and friends. Sometimes I live a little for myself. I'm sure in time the living for yourself gets bigger and easier.
Be gentle on yourself. 3 months is no time at all. People grieve in different ways. It might help your partner to be at work, to be busy, to distract. He won't grieve like you and you not like him. At times your grief will match but from hearing others experiences (in single) most couples grieve differently from each other. No way is the right way. You just have your way.