Please help me work our logistics?!

[Arghhconfused]

Im asking here as I'm getting myself really confused and usually there's some bloody brilliant ideas on here.

I live in a 3 bedroom house, with DD9 who has significant SEN and DS5 with moderate SEN.

DD uses her bedroom and is pretty messy. DS only uses his bedroom to sleep or sometimes lay on his bed with his tablet.

In about a months time, my partner and his DS12 with moderate SEN will be moving in full time for about 2 months.

Im trying to figure bedrooms out. DSS and DD are both private people and like their privacy. Atm im thinking DSS will have my sons room. Then DD will have her room, and my Son can sleep on the pull out trundle in my DD room.

My partner will be bedbound for the first few weeks, and housebound after that for a further 5 weeks. We have a bathroom upstairs and downstairs and ill be caring for him after an operation.

So im asking if 1. is there anything bedroomwise I havent thought of.

1. Managing as a family of 5 with 3 SEN kids and a bed bound partner?
2. Any adaptations or appliances that I can buy that will make things easier for my partner, or myself?
3. Anyway I can make meals easier
4. Tips for not losing my sanity!

Im open to ideas, and i will have some money set aside to be able to buy things that will make life easier.

Thanks in advance!

What other rooms do you have downstairs, is there a dining room that could be turned into a temporary room for your DS?

Just a small lounge, large kitchen and a toilet. No room to make a downstairs bedroom unfortunately.

DH and I are both ill at three moment and I went to Cook and bought some family meals edict have been a lifeline.

I find having meals planned in advance (not necessarily every day planned but having a week's worth planned and shopped for) plus a couple of emergency min/no prep ones really helpful.

I'm about to have an op and will be stuck upstairs for weeks with DH wfh downstairs (then off to office 1/2 days a week). I'm planning:

Mini fridge/good cool bag in room with lunch/milk/drinks;

Big bottle of water first thing;

Kettle/mugs/tea;

Wipes;

Bags/bin for rubbish

Good luck, sounds tough but like you've thought it through, hope the op goes well

What are the sizes of the kids rooms, is there any way they could be split a little with a folding screen or freestanding bookcase, just to give some sense of personal space and privacy?

Could you not move the sofa in to the large kitchen so you can make the lounge a temporary bedroom for you and dp then give DSS your room? That way your children don't have to share their private spaces. I think 9 is a bit old to share with your 5 year old brother really.
You'll still have some space to chill together downstairs and dp won't need to manage stairs.

@Matchingcollarandcuffs that's really helpful. I don't usually meal plan but I think that might help a lot. I'll get some ready meals too. I will be home most days but a mini fridge (DD has been after one of those for years) and a cool bag is a great idea.

@HalfShrunkMoreToGo my sons room is a small single and my daughters is a decent size double so I could definitely portion it off a bit for my son.

@maryberryslayers the lounge is a through room, from the hallway, through the lounge and into the kitchen, it's thin aswell so a bed wouldn't fit. My partner will be staying upstairs for at least 3 weeks.