@1stjohn0666 Extra hired help.
Both of you are stretched thin and both of you deserve some personal time. You are irrationally angry because you are exhausted and i totally sympathise with you.
My suggestion would to pick between getting LO up in the morning or bedtime. Right now you are basically working 5am - 6.30/7pm (assuming thats when your partner gets home) which is 12 hours and not sustainable.
If you can afford to, can your nanny either handle the mornings (even if for only a few days a week) which gives you the opportunity to sleep longer or evenings so you have an hour at least to decompress after work? Think about it - you are checking out of one job and straight onto the other which is parenting. That will be really hard for anyone.
If nanny cannot extend hours, maybe consider a babysitter/au pair for 1-2 nights a week to help with bath and bedtime or could even be for a few hours at the weekend. Otherwise, do you have family around that can help?
My partner also works 12 hours and is the most easygoing person in this whole world haha but i can see how much of a strain it has on him and how exhausted he is during the week.
I say this all the time. We have to separate idealistic from realistic. The ideal is for both parents to pull equal weight and be the only carers for children but unfortunately this is not always feasible and trying to force this in most cases, leads to burnout and puts a strain on many marriages/partnerships. Outsource what you can and you will find even more joy in the free time you have dedicated to your kid