Drying time before sealing slate. Please HELP! DIY project gone bananas...?

I really hope someone can give me advice. I took off 3 days to get my slate tile floors stripped and sealed (with Aquamix Seal and Finish Low Sheen - Its a Coating Sealer that can "breathe.") The stripping took a full 2 days until 2:30 in the morning. I only have till tomorrow evening until the kiddos will be running around, so I have to get this done, and I have to be at work at 6am tomorrow.

So, here's the question. I've read the recommended drying time on slate is 24 hours before sealing. I'd really like to start sealing at 10pm tonight so my husband and I can catch a nap before I get up at 4:30. If 24 hours is recommended, is 20hours o.k? Or, am I screwing myself and jeopardizing the whole project?

We have the heat on in the house (windows shut because, of course, its hazy today). And a ceiling fan on. I live in the NorthEast if that helps w/ climate questions (Pennsylvania).

Please help! I'm panicking! Thank you in advance.