I think one big wiper would be hard to come by. So just having one might be better
I (used to) get rubber inserts for a dollar for my wipers. Just remove the old rubber, replace with new. Keep the old frames. It's $1 for a pair of rubber blade inserts. You cut them on the ends to fit, so It fits virtually any car. I spent 2 bucks on 4 wiper blades, screwed one up, got one for the rear (cut to fit) and 2 for the front (cut to fit). They're triple edge blades too. Worked out great until they stopped supplying them at the local big lots
. I'll have to search them up right now!