You just need to keep moving that bridge. If it’s sharp, just keep scooting it back toward the tailpiece until you get the right note. Make sure you’re retuning the strings between each adjustment.
To make moving the bridge easier, you might want to loosen the tension on all but the 2 D strings. You can use those to get the intonation right, then tune up the other strings. Having those other 3 strings loose makes moving the bridge easier.