@ChristmasSpirit99
This is going to be controversial but I wanted to highlight this bit of OP's first post:
"We are very fortunate to recently become mortgage free, due to a mix of my husbands savings, stocks & wage."
From this sentence I took it to mean that the DH in this scenario is hardworking, intentional and has potentially bust a gut to get to the level where he is getting rewarded with both a high salary, is able to save and also getting stock rewards. This is no easy feat.
After achieving that he has ploughed his earnings into making them BOTH mortgage free, as opposed to frivolous spending on some silly hobby etc.
IME You don't make those kind of earnings without some major work performance pressure and sacrfice (in my experience - corporate).
I feel like to unilaterally decide to quit because you are tired is really unfair.
It's a huge burden to be the sole breadwinner. Plus you have (presumably joint) plans to renovate the house. We also all know the kids get more expensive as they grow.
I think it's fine to discuss the division of labour in the home as an issue, but to just think of quitting a job completely for tiredness is really extreme.
Tiredness with young children is unfortunately par for the course and I think OP you would be best thinking about what would help you to feel less tired without lumping the burden of providing for the whole household on your DH.
I am not saying this to be horrible but I think that such a change in dynamic would not be good for you (in the long run - you never know what might happen in the future) or for your marriage. Resentment is hard to undo.
I hope you can find a compromise.