When do you actually consider rehoming?

My partner and I got our first puppy ever. I myself have had dogs throughout my life but never puppies, always adopted/rescued older. My partner has never been a pet person in general… found that out recently.

This puppy life is way to chaotic for me. We adopted at 11 weeks, pup is now 7 months, and I am struggling to keep it together. He’s reactive outside to everything, not just people and dogs, I’m talking a bag flying in the wind… someones garbage wrapper that wasn’t there the day before. He has been a little bit more gentle with my senior dog but they still have not formed a bond and I can’t imagine a time when I could leave them in the same room together, I think that’s a fantasy. My partner and I both determined that we are not PUPPY people. Everyday I wake up and I don’t any to get up out of bed because I am so depressed to attend to him. I am at a road block and honestly very emotional thinking about rehoming and not rehoming. Anyone felt this way before? I am also overwhelmed as I “the pet person”, have been taking on almost all of the responsibilities. I do not blame my partner, it was not their fault, and perhaps I pushed the idea a little too hard and thought I could be more responsible then I am? I don’t know what to do.

We have crossed many milestones with our pup, crate training, potty training, but it never seems to end. I cant even remember what he looked like as a puppy unless I flip through photos because the entire time I was so exhausted and sad. Is this normal?

Edit; I am speechless and overwhelmed with happiness. Thank you all for sharing stories about your pups. I don’t think there is enough videos/websites that talk about this, everything is “dog barks at people, dog barks at dog” (or I don’t don’t dig deep enough) but you all have made me feel so much more comfortable sharing stories about things your little one got scared of, and all of it is so similar to my boy. I feel relaxed my pup is just a normal little guy working his way through life, with a hint of fear reactivity… but now I am able to find the right resources!!!! Thank you thank you thank you!!!