Do I have to drain my oil ? (Again)

So here’s my issue. I need to know if I can open the wet clutch housing without draining the oil on my 660. I’ve drained it once already after oil change only to find out the WC uses the same oil….. I did the WC slugs but they’re engaging too early. Now I gotta pull the WC and take out some weight. Can it be done by tipping bike over like 45 deg or 90 deg all the way over? ( without fuel or oil pouring out if the bike)
What about tipping bike back on it’s tail to replace the front engine coupler?
Cheers Rkcrwlr.