No apology needed. We all have bad days, and I have skin of an armadillo. LolI'm sorry, I'm just so used to every single person telling me that it's too small, or that I'm doing something else entirely incorrectly. Feeling defensive atm.
Right, quick fix until you get your new enclosure.
Cover the half with heat source (s) with foil again and get a piece of plywood cut to 18" x24" to cover other half. You can slide plywood off to feed etc. Plywood will get damaged with humidity over time, but hopefully last you.
When do you expect to have your new enclosure complete?