Unmatch note?

I'm new to Hinge (42F) and online dating in general, little over a week's experience. I matched with someone (49M) on day two and we messaged back and forth maybe 6-8 times the next day and then he went quiet. But it wasn't about anything weird, it was totally benign (it was mostly him telling me about his dog and how he got him/named him) and then he just didn't respond. It's now been 5 days, and I'm wondering if I should unmatch. I drafted this note to send, is this too much? I like to be a transparent and wrap up loose ends, so it feels weird to me to just unmatch when there's no indication that he dislikes me in any way based on the chat. What do you think?

Draft: "Hi! It seems like you're not interested in chatting with me anymore, but I figured I would go ahead and send you another quick message before I unmatch. I'm new to Hinge and not really sure how this usually works. So I guess if you see this and are interested in staying connected then let me know. For my part you seem like a cool guy and I remain open to staying connected if you are."