3/3/3 rule

"There is a 3/3/3 rule of thumb with adopting animals into your home – it takes 3 days for them decompress when you first bring them home, 3 weeks to learn the routine of the house and 3 months to feel fully integrated into the new home. The same can be applied to this situation," says Kostiuk. "The sooner you begin (re)introducing them to the new routine, the better."

https://www.nbcboston.com/lx/prepare-your-new-pet-for-your-return-to-the-office-by-taking-these-steps-right-now/2348738/