Your situation doesn't sound too far off from mine. I'm about 9 months from FIRE and 15 years (after FIRE) from SS, so it looks like I'm a little older and a little closer to FIRE. I hit my FI number years ago and hit my FIRE target number more recently. My FIRE number is more than double my FI number because my expected barebones FIRE budget is about $1600/mo, but my planned spending is over $4000/mo.
In just the last couple months, I moved from 80% stocks to 60% stocks with this short timeline to FIRE.
If you wanted to move toward a more conservative AA as you approach fire as part of a "rising equity glide path", you wouldn't normally start increasing your equity until after you FIRE, which is what I plan to do, although you would normally start moving toward the conservative AA years in advance rather than how I did it. Fortunately, it worked out for me, and I made the shift in AA when my index funds in my 457B/401a were at a high, even though the S&P500 was still down some from the high. I've seen rising equity glide paths calculated out over 10 years and also much longer. I'll go with a 10 year path.
I'm 60/40 now, and with 15 years of FIRE to SS, I would not consider that too conservative to start FIRE. SS is not a bond. The best way to think of SS is that you just have less expenses to cover with the stash when SS kicks in. So, that means you need less stash, not a different AA. Just subtract what's covered by SS, and you still have expenses that need covered by your stash just as if the SS and covered expenses didn't exist.
Your home is part of your net worth, but for the 4% rule, you should only count your stash for the reason you mention about your home not producing income to pay your expenses. An exception would be if you are planning to sell it to downsize to a smaller home (or to rent), then you could factor in the extra stash as a result of the transaction. I'm already in a LCOL area as far as home prices, so I completely exclude it from my calculations.
You should plug your numbers into cFireSim, and it will give you your percentage chance of success. It allows you to add things like SS income or changes in expenses. You can try some different things to see how it affects the result. It gives me 100% when factoring SS at my $4K+/mo spending, plus I can always cut back on discretionary spending if needed.