I was pointed here by someone on the Depression forum after opening a thread on self-care and personal hygiene.

For the past few weeks, I've been showering once a week. Before that it was twice, although I was aiming for three times.

Showers are just so exhausting. One of the most tiresome parts I think is drying off. So I mostly just wait for the wetness to evaporate and wear a bathrobe or loose clothes afterwards.
But the whole showering process is exhausting too. I have a leg amputation and thus aprosthesis so I shower sitting on a shower chair, so I don't have to stand. That's something at least. I can't shower quickly because that's far too tiring. I usually take around 25-30 minutes, sometimes more. Because after I've washed my hair it takes some time to be ready to wash my body. I sometimes (often) forget to do that, too, and then I've only washed my hair.

When showering is really too much but I have to (I live at home and I'm dead scared of my parents getting angry, which they will if I don't do as they say - meaning showering when they say I really have to) I sometimes shower in the tub. Sit down in the tub when it's filled with around 4 inches/10 cm of water, and then use the handheld shower head to rinse myself. The tub fills up slowly with the water from the shower head, so I won't get cold even when washing my hair. But sitting in the bath is much less exhausting than sitting in/standing in the shower.

Edit: It's been a week since I've brushed my teeth. It has been longer in the past.