It is a temptation to overdo when having a good visit - we learn though. As far as getting leg into bed and doing leg lifts and even heel slides-- my hospital provided a strap that is long enough to put under the foot and hold both pieces with one hand so you can support the leg as you hold it straight and get it up into bed. This is the same strap I would put under my foot and hold tight and help lift the leg and assist in hold at first and even assist with heel slides. It was awesome because you have more control and your other muscles start getting used to the motion without the extra stress on the new knee. I know I have seen other advice that you can use a belt or a long piece of material. I was also at home alone after the first week as my husband also left at 6am and did not get home till about 530p. It is quite doable once you get everything in place before he leaves for the day. Are you going to have home PT-- I did so 3x/wk someone would stop by. I live in the country without any close neighbors but if you have some close neighbors maybe one of them can just stop in and say hi in case you need something. The one other word of advice is one from my home PT who told me to make sure I had a phone with me at all times if sitting and if getting up to go to the bathroom or kitchen. Look forward to hearing about your progress.
United States
It's so nice to have her home it is starting to feel like normal around here. Well except for the crutches, walker, pillows, pill bottles in the kitchen....
He leaves the house at 6 which means I have to get up at 5:30 so he can help me down the stairs. Once he leaves it's a long day. And like you my brain just won't do anything more than recreational reading and TV viewing. Here is the US we have a channel called HGTV (Home and GardennTelevision - maybe you have it in Australia?) Just fluffy shows about home decor. That is the most my brain can handle!

Jenny