So sorry for your loss. Owning a yorkie is like having a toddler for life and their loss is horrific.
In 2013 I had to put my 17 year old girl down. The pain in my heart was so severe I thought I was having a heart attack. I couldn't leave the house, couldn't drive,I was a hazard on the road, my mind always went back to that call "you have to come and say your good-by's". I swore no more dogs.
I had 3 yorkies pass before this one, Matese, they all affected me but, I had other yorkies to be strong for as they missed and grieved for their sister.
Matese was my last and the only one I had for 17 years, so her loss was great.
Everyone grieves in different ways, time it takes to heal depends on the person. Keeping yourself busy may help, but it takes time, a lot of time, even months before you can think about Tobie and not cry, but a time will come when you will think of the happier times, the silly, funny thing Tobie did, you may have a tear in your eye, but you will have a smile remembering the happier times (((hugs)))