2 month old BP in adult rack?

I want to pick up a BP that is about 2 months old but all I have is an adult sized rack, any ideas for making it smaller or if its even possible?

My idea was to use cardboard down the middle of one of the the rack tubs and place 2 hides at each end and use aspen to fill the area.

Thanks!

CB70 4 Tub Rack up to 2 rows of 4" under tub heating tub dimensions
- 17.75" x 33.5" x 5.25"

http://www.cornelsworld.com/uploads/default/files/1.jpg

I start out my little guys in 24" x 24" x 12" cages (L x W x H) without any issues at all. Not all BP's will be ok in a cage that large but most will as long as you provide proper hides. Worst case take some wadded up newspaper to fill in some space in the tubs.