Dachshund X Spaniel Puppy for Sale

We have a puppy for sale, we bought him from a breeder but he is not suitable for our family setting unfortunately. We have a baby and my partner is disabled, and he is just too high energy for our family dynamic.
He is a mixed breed between a spaniel and dachshund. He is a very loving puppy just high energy. He wants to play all the time and is very fun, he does have separation anxiety which has gotten better over the last month or so but does still effect him a little. He is also still in his play biting stage which all puppies have but thought it would be best to say, he doesn't mean harm and it doesn't hurt, just doesn't know boundaries well like all puppies. He is in puppy brain and enjoys playing fetch and getting into things he shouldn't. But apart from that with a bit of training he will be a great family dog.
We think he'd be better suited to a family home with older children or teenagers or a child free household because he can be jealous of babies. He has been brought up around a baby and cats and is well behaved around them. He does want to play with the cats and cuddle up to them which they don't really appreciate but he is just a puppy.
As we are a family we struggle to find the time to enjoy him like we should and want someone else to appreciate him because he is such a funny loving dog.
He comes with a crate, bowls, toys, collar harness and leash.
He is microchipped and has had both his puppy vaccines. He isn't neutered though.