I work full time and I’d recommend the following:
Get a gardener
Buy a slow cooker and a freezer big enough to store batches of meals.
Set up online shopping lists.
Meal plan
As soon as school news letter comes out put all dates (with reminders) in your phone calendar.
Get in the habit of taking photographs of party invitations as soon as they come in.
Buy a small store of appropriate party gifts and cards for your children’s age groups.
Once a quarter buy all the greetings cards (and stamps) you need and put reminders to post in your phone.
If you are travelling for work get a travel kit of toiletries and a sensible easy to pull/lift travel case.
Start training the family to get everything ready the night before. Lunches, uniform, stuff for extracurricular activities etc. Give them appropriate responsibility for doing this themselves.
Buy enough uniform for every day take my word for it waiting for the tumble drier to finish at 1am is no fun.
Amazon is your friend.
The one thing we don’t have is a cleaner but we’re considering it.
Don't do everything yourself Make sure your DH takes his share.