Is it possible to bleed the brakes with one caliper detached from its carrier?

I’m in the process of changing a disc(rotor) and the new disc will take a week to arrive. I had some brake fluid leakage due to a piston dust boot that had slipped out, I removed the piston and replaced the O seal and put the piston and boot back in place hence I need to bleed. While waiting for the disc is there anyway I can bleed the brakes with this caliper/piston removed, I am also waiting on new caliper carrier bolts as others had to be cut off so I can’t fix the carrier on yet either.

I mean when I pump the brake pedal during bleeding the detached calipers piston will just pop out, is there a way around this?