Rest in peace Mr. KoKo.
My condolences on losing your fur baby. For some people getting a pup may help them get over their grief, but for others they just can't do that. When i lost my little girl i was deeply sad and couldn't think of getting another. Now it will be almost 2 years and I will be getting my lil girl on August. Take your time and remember only you will know when you are ready.