I'm assuming Sophia and Isabela is at least upgraded to four stars in artillery.
Put Sophia and Isabela in the light artillery units. Ottoman heavy artillery is OP, so you could try to put them on the beginning heavy art, but it's quite far from the shore. Lasalle on the guards cav, Massena on the grenadiers
Use your ships to flank Duckworth. One of your artillery generals should be able to attack Duckworth as well. In my play, he died in about 2 turns. in the north, go straight at the port. Take the objective port. The only one you should worry about here is Yermolov. Chicagov deals little damage and Bagration could be easily dealt with. Transport Pasha, as he will be a useful asset.
Brock would usually try to attack after Duckworth. Pick him off with artillery and ships. He is quite strong in combat so don't try to engage. Bagration could be flanked. Lasalle and Massena are more than a match for him and could be easily killed.
In my playthrough, France killed Drummond, so you only need to worry about Jervis. Build ships, maybe transport one of your artillery generals to fight at sea.
This mission might seem hard at start but is actually easy when you get a hang of it. Spam coastal forts as a distraction. Don't forget to build up your cities for income.
(I used Berthier (5* cav, 5* move), Sophia (5* art), and Isabela (5* art) for this one)
