Welcome Mileage!
I was about your age when I got super serious about retiring early. I had always contributed to my 401k... but I upped it from 10% to the max allowable. That took some budget adjustment. We also started making extra principal payments on the mortgage. Again, had to tighten our belts to achieve this.
By diverting funds into mortgage reduction and retirement savings we were forced to re-examine our budget - and found lots of little places to trim, painlessly. (Renegotiate cable, get a less expensive cell plan, cut as many monthly (recurring) subscriptions/costs as we could. ). It became a game. My coworkers teased me that I always brought my lunch to work - but I had the last laugh when I retired early.
The bonus of trimming our spending, was that meant we needed less for retirement spending. Because we'd learned to live comfortably on less money - so our retirement budget wasn't as big.
I retired at 52, concurrent with paying off our house. That was 8 years ago - our sons were 11 and 13 at the time. Their 529's were fully funded for public 4 years of school.
The key is to look at your spending and put as much as you can towards savings (retirement, regular, 529s, mortgage reduction, whatever.)
Welcome, and good luck!!!