Hi there
I was in a similar position about 10 years ago to what you are now and gave up my job. There are a few things that if you decide to do it, I would definitely recommend considering.
Even if you go part time, it is incredibly important to have a joint bank account with both of your salaries going into the same account. This is essential in shifting the mindset, of your spouse in particular, to thinking about your finances as a collective effort rather than being something that is theirs or yours.
When I stopped working, my husband felt a lot more stress and burden being the sole breadwinner and this caused resentment and issues in our relationship. About five years after making partner, he left the partnership and started his own business which paid him substantially less money but he was much happier.
I now work full-time again, and our children are thankfully a bit older now too. Life feels much more balanced, and the share of household and caretaking responsibilities also feels a lot more balanced. As much as I would like to work part time, I now think about my pension savings, and the fact that I will be almost fully financially dependent on my husband’s pension when we are older if I do not work full-time until we retire.
Having watched other people work through similar issues, the ones that seem to have been happiest and found the best level of balance between having their own life and caring for a family are the people who have worked part time at around three days per week.
Sincerely hope this advice helps you.
Good luck with it all!