Hey HeetyO, congratulations regarding your little sleeping through the night. For sure now and again you will have nights like last night but you are in the right track. The most difficult thing to accomplish you have already made it!. My elder son took 18 months to do that, but that is another story...
Now the only thing is fine tuning, since I guess tomorrow Saturday you will not be so happy to start the day at 5:30...
Some babies only need 11 hours of sleeping in the night, so have you considered aiming for BT at 7 or 7:15 pm? Perhaps you can add 5 or 10 minutes extra every day, and see what happens. I guess ideally you would be happy with 7:30 pm to 7:00 am. What do you think?