Help in finding a substitute for condensed milk in a popsicle recipe please

[harvestl]

Hello! I'm looking to make these cheesecake popsicles (http://blog.hostthetoast.com/boozy-red-white-and-blueberry-cheesecake-popsicles/) for an upcoming Pioneer Days bbq, and I'm quite stuck. I like frozen cheesecake, so I suppose it might taste alright, but rumchata is dairy based and I have no idea what to replace it with. Or the condensed milk. Or anything from the white layer really. I hate rum, but like pretty much anything else.

Can I get some help please on how to improve these? I'm fine with completely changing up the white layer, or turning it into a proper cheesecake, I'm just very stuck as to what to do!

For the Simple Syrup:
½ cup sugar
½ cup water
For the Strawberry Layer:
1¼ cups strawberries, hulled and chopped
¼ cup simple syrup
2 tablespoons Rumchata (or Bailey's, or milk)
For the Blueberry Layer:
1¼ cups blueberries
¼ cup simple syrup
2 tablespoons Rumchata (or Bailey's, or milk)
For the Cheesecake Layer:
6 oz cream cheese, softened
¾ cup sweetened condensed milk
⅓ cup Rumchata (or Bailey's, or milk
4 graham crackers, crushed into crumbs