Sorry , just reread that your husband will be wfh 2 days a week but sounds like you have no flex at all?
Ring doorbell is great. You can literally stalk your kids arriving and leaving. Microphone feature to remind them to lock the door properly 😉
Ditto with a video Alexa. You can call them from your phone or "drop in" in the kitchen and see what's happening.
Lunches made the night before. No ovens or microwaves ideally.
Basic first aid - scalds, cuts etc.
Again, an Alexa call feature or Siri set up will mean they can call for help hands free if needed.
Trustworthy neighbour - someone you can call if you are worried they've left the back door wide open?
Any pets? Dogwalker daily who picks up as they leave, locks up after them and leaves with the dog.
Mostly though trust that they will get there. It might take one or two detentions for lateness but they'll figure it out.
For our oldest, dyslexic and a complete dreamer we use an alarm on a basic smartwatch and a mobile phone - set up a digital calendar with alerting for music lesson, time to go back to school. Got to bed. Etc
With two devices there's more chance she'll have one and she's not allowed to carry her phone during the day