I have been following this thread, and am so sorry. My little boy died 4 months ago now, at the age of 3, very suddenly. Your post asked for some advice, and while I am not sure this is exactly advice, its what has happened to me over the past 4 months and can (hopefully) show you the progress that I have made so that you feel some hope.
The funeral was 3 weeks after he died, and I don't remember what I did in those 3 weeks except lie in bed and cry hysterically. Someone dad/parents in law/sister/friends looked after my other 2 little boys and I barely left my room. I couldn't eat or sleep properly, so spent all night awake sobbing and then all day asleep.
On the day of the funeral I pulled myself together and got through it ok.
Gradually I started to set myself little tasks. Leave the bedroom, make my boys lunch, dinner, allow people to come and see me, pick my son up from school.
There are so many things that I still can't manage, but have noticed that I am getting back to things that I used to do very slowly. Cooking dinner, laundry, bathing kids, taking them to swimming lessons, going to the school more.
Recently I have watched my little boy in his school play, took my baby to a baby group, and yesterday it was my little boys first day off from school, and for the first time since he died I got up before lunchtime and spent the whole day with them, and took them out for the day to a waterpark and for ice cream.
When I think back to what I was like 4 months ago I can barely believe that I have accomplished these things. I was saying on another thread that it feels like I am just emerging from a fog and now I need to try and build some kind of life. I still cry every day, sometimes most of the day, sometimes off and on, and sometimes only once, but it is always there. Today I have cried once so far. I can't look at photos or videos, and have realised some of the things that trigger me feeling even worse, such as photos.
I have allowed myself to feel every emotion and not be afraid of it. My thinking is that if I let it all in now as painful as it is, that is what has to be done to be able to get through it. There are times when I howl, throw stuff, scream, but I don't care as it makes me feel a fraction better. I also know that I am not losing my mind.
Everyday I have wanted to be with him, but I am noticing that if I keep busy, that thought doesn't consume me all the time now. I have also noticed that I am no longer clock watching and thinking about what we did at so and so time. He died on a Wednesday, so today I am normally a mess, but have been ok today and the times of events haven't been as much on my mind.
The one piece of advice I have taken from someone who had this happen, is that I have to make new memories. Its the hardest thing to do because I don't want to live this life, but I think for me it is true. I am slowly trying to do things so that I don't always think that the last time I did it it was with him. We have booked to go abroad in a few weeks too. Like you, I still struggle with getting used to the fact that I have 2 boys and not 3, and feel terrible about it everytime I leave the house - and for that reason I have hardly left the house for 4 months. I am going to try and make sure that my son has a nice summer holidays, and that seemed unimaginable before. We have had eater holidays and June half term since he died, and I can't even remember where the kids were let alone what they were doing.
I hope this helps just a little bit. I know when I was in the really early days I got a lot of support from here, its so comforting to know that people have done this before me and are learning of ways to cope with it. Maybe looking in it doesn't look like I have accomplished much, but to me, knowing how hopeless and desperate I felt, it is massive amounts. xxxxx
xxxxxx