I'm late with an answer, sorry! But, I'm in a very similar (yet completely different) situation. My daughters and I just started homeschooling, so I don't have a ton of time to go the the gym anymore. I used to drop them at school and go for a leisurely 2-3 hour workout, come home for housework, then play mommy after school. Nowadays, though, I fit in my sets in between lessons or chores, and it works pretty well for me. I have to do my MS at the gym, where they have day care with a 2 hour time limit, but, by doing most of my LHT (must still buy a pull up bar for home) during school, I can fit my MS time in more easily. It's actually kind of fun to watch my 5 year old try to do overhead presses, but I'm encouraging her. If she learns now and keeps it up, she won't have to as an adult.
Motherhood: When changing from pj pants to yoga pants qualifies as 'getting dressed'.