Defrost the day before. Leave it in the fridge. Then it heats up in just a few minutes the next day when you're ready. Easy breezy.
But yeah, I see what you're saying. It takes a good 10 minutes for my BP to eat. My other snakes are quicker.
What do you mean putting the cage back up like it was?
My snakes eat on different schedules. But occasionally all four eat the same night. Takes me 20 minutes tops to feed all four.