This is an easy question — and a tough one. You are not REQUIRED to start taking withdrawals from your IRAs (combined total) until you are age 73. Then you can take some from each account — or take it all from one account. That money will be taxed as ordinary income.
Money you take from your brokerage account might qualify for lower capital gains tax rates. So a lot depends on whether you think you will be in a lower tax bracket at retirement (since you are still working). And you don’t mention Social Security– which I hope you waited to take until your 70th birthday.
This is a perfect time to get some trusted overall financial planning advice you can trust. Start by reading this!