Have you considered moving to a place with lower-cost daycare?
I pay $137/week or about $7300/year after the annual 'registration fee' for my 3 y/o. At 1.5 my daughter had a best friend and at 2 my daughter knew the alphabet, so I'm satisfied.
I stressed about finances a lot until I realized that it's still possible to save gobs of dollars post-kid. I spend maybe $12k/year grand total, and most of that is optional crap DW buys off Amazon when she gets bored. We have a 529 account that we ask people to donate to for birthdays instead of buying gifts - it's up to $11k and our house is still full of gifted toys. Our savings rate is about 50% and we FIRE in about 6 years. So far this year, our NW is up $100k!!! We could hit a 70% savings rate and shave two years off our FIRE date by simply moving out of our ridiculously big 3/2, 2700sf house and into a 2/1 like you have, especially if it was a "fixer upper" that we could just pay cash for, fix up ourselves, and be done with mortgages. Such options are available all day every day in my deep South metro area of 1.5 million people.
Build some lifestyle simulations: Open a spreadsheet, pick a dozen smaller metro areas, find a probably-acceptable midrange daycare, find your income on salary.com, find an example house to buy on zillow.com, and crunch the numbers. A simple move for the next 5-6 years could put you back on your original FIRE date despite the kid.
Oh, and BTW, it does change you. Now I want FIRE so that I can spend more quality time with the kid someday, lead the PTA, whatever!