A poke about and freshen up for the fork.
Cassette lock ring tool.
Going to whip off the top caps one at a time. Drain a leg of oil, and a spring and spacer should drop out.
I think there is too much oil already so see what colour and how much comes out.
Then add fresh oil at the lower amount as it's easier to add more than remove small amount.
Fork against radiator at the moment as warmer oil flows easier.
Not doing a full tear down as manual not printed out and might need a special socket to remove foot nuts. As these forks are fairly basic inside there is nothing to play with as compression is fixed and not a tuneable shim stack that user serviceable.