Bunnybun, sleeping through the night is actually anything 5 hours plus, so your lo is actually sleeping through the night!!
That's totally normal because in reality even us adults don't sleep for 12 hour stretches without waking up to pee.
What I will forewarn you about is the 4 month sleep regression. My lo slept great from 2 to 4 months and then the 4 month sleep regression arrived and that was the end of that for a long time.
A lot of people would get it confused with the need for starting solids, but in reality, a lot of the time it's to do with them developing and their little tiny minds being too active to sleep.