We also do baby led naps. Her last one at the moment is between 4 & 5:30, bath at 7:30 followed by bottle and bed
we do 9.30-10.30 and then about 1.30-2.30 and down between 6.30-7. that last wake window is long but seems to be working ok - we changed it about 2 weeks ago to drop the third nap
Could you try and push your first nap a bit later to maybe 9am for 1/1.5 hours ? Then aim for a longer one after lunch? Last nap here is usually 2-4. Then bed time is 7.30
Last nap here is around 4pm, if she wants one (she does 2 naps half the time and 3 naps the other half). Bedtime around 8pm
We've moved to 2 naps as the last was getting too late. Usually 9.30am to 11am then 2.30 til 3.30pm. Bedtime is asleep by 7.30pm. You might need to push the 2nd nap time by 30 minutes to get a later 3rd nap.