Interestingly, there was an experiment of people "hooking up" a young mouse to the blood flow of an old mouse and it did work rejuvenating the old one (while doing the reverse of the young one). Not all the effects of ageing were affected, mind.
In recent years, researchers studying mice found that giving old animals blood from young ones can reverse some signs of aging, and last year one team identified a growth factor in the blood that they think is partly responsible for the antiaging effect on a specific tissue—the heart. Now, that group has shown this same factor can also rejuvenate muscle and the brain.
Quote from here: https://www.sciencemag.org/news/2014/05/young-blood-renews-old-mice
There are also experiments that refute this:
When two mice are sutured together, a technique called parabiosis, blood is not the only thing that is exchanged in this setup; organs are also shared, so old mice get access to younger lungs, thymus-immune system, heart, liver and kidneys. In surgical suturing it takes weeks to a month for the effects of blood to take place and the precise timing is not actually known. Nor is the precise amount of the exchanged blood.
In many of these experiments, older mice that received younger blood saw either slight or no significant improvements compared to old mice with old blood. Young mice that received older blood, however, saw large declines in most of these tissues or organs.
“Under no circumstances did young blood improve brain neurogenesis in our experiments” [...] “Old blood appears to have inhibitors of brain cell health and growth, which we need to identify and remove if we want to improve memory.”
So, your setup will probably not work very well. Better to wait for science to do more experiments and discover what causes some of the rejuvenating effects and how to replicate them medicinally.