I had double knee surgery last year, different operation to you as I had a lateral release but both knees done on the same day.
I am impressed that you are in your room, I spent 4 or 5 nights on the sofa but then it was slightly different as I didn't have a 'good leg' to stand on literally so stairs were an absolute nightmare for the first few weeks.
My main tips are to remember that recovery from knee surgery is never linear, there are often days when you feel that you're further back than the day before. You're not really but don't be too despondent if it isn't a continual straight level of recovery.
Secondly do the Physio religiously. I set my alarm five times a day for the Physio I was meant to do. I got virtually nothing from the hospital Physio but was lucky to have private Physio cover so saw her every week for the first couple of months then less often up until about a year post op. Physio really is the key to your recovery and gaining back full mobility and use. That said remember not to overdo it, you can push yourself too far. Always take painkillers before seeing the Physio!!
I was 8 weeks on crutches and not driving in the end, DH was brilliant but my mum was my saviour. She came and stayed Monday to Friday for the first month or so when DH was at work. She helped with the house, sorted the kids and took them to school and very importantly took me out, which made a massive difference.
I had various complications in one knee including an infection and a burst haematoma a couple of weeks in. The first time I was left alone for a couple of hours I felt my sock was wet then looked down and my knee was literally pouring blood out of the bandages!! A bit of a shock but soon sorted at the hospital. I was of course very rare in that I had two knees to compare, other of which seemed to be at the opposite ends of the recovery spectrum!
Take all the painkillers you can get. I had codeine to start then tramadol for the next few weeks in addition to ibuprofen.
Nearly lastly there is a website called kneegeeks which has lots of post op diaries which are worth a read. Remember though that people still posting on there after a year or two are those with problems, the good cases have gone on and got on with their life.
Finally take care. My day 4-5 post-op were the worst days for me. Treat yourself gently, you've been through a lot.