I created my own RTK deck earlier on ANKI and now I downloaded a new premade one. How to match the progress over here

What I want to do is : I want to make sure that the way my previous deck card's interval has been set up till yet that is 450 cards. I want this same thing to be done on this new deck. But I don't know how. right now its fresh.

I just tried setting the new card count for 450 , so I get them done today and then lower it back to 25 new card per day. Idk help me out guys. I'm afraid what I did is gonna increase my review count to immense ammount the next day. because I've set the max reviews per day as 9999

by Hypernibbaboi