Awwww I'm so sorry for your loss. I thought I would never get past losing my male canary, skittle. He brought me great joy. In the morning he would wake me up to his beautiful song, and he would sing his heart out many times throughout the day. I hesitated for months, but now that I have Rio, my Senegal I am so happy to have her. She wakes me up to her clicks and whistles and a few really loud screeches when she knows I am ignoring her. But then when I finally talk to her she calms down, and peeps at me. Like 'oh hi mom.' I get up, open her cage, take her out and she wags her tail and whistles in happiness. I take her to her stand where she does her business as I get her food ready, then I put her in her other cage and feed her. I tell her see ya later and go back to bed. Zzzzzzzzzzz for a couple more hrs. I love it.
It will take time but this is a whole new experience for you. I'm sure you will bond and while the new baby will never replace the one you lost, he will help you to heal that part of your heart.