Again - how to freeze cards for a few days?

Hey I've been searching around and everywhere I look the same answers pop up and people giving the same responses how you can't freeze your brain etc etc.

The thing is: I repeat~700 cards every day and it usually takes me 3-4 hours. I have been doing it for months. When I learn 50-60 new cards every day the cycle seems to stay the same.

Now I have full day all weekend courses. If I don't do my repetitions for three days I will have 2800 cards to repeat on Monday. I will never be able to get rid of the backlog and this will destroy months of studying.

I need to pause and freeze the decks as they are for three days.

How come Noone developed an add on for this?