Advice on how to switch up my exercise routine?

I’ve started a new exercise regime. I’ve been doing the same things for 2+ weeks now and I’m getting bored.
I start off with 20–30 minutes of cardio (alternating between walking fast, jogging & short sprints)
I then do 30+ minutes of resistance & core exercises
Usually, I follow that with a swim.
I’m working on toning up and love to swim so I’d like keep that going, but I’m wondering if I should alternate between the two as opposed to doing them all in the same day?
Does anyone have any creative ideas for mixing things up a bit?