<human>: Can you succinctly summarize the text in 1-3 sentences?

Back story: I have a 10 month old male lab mix named Doug. He was my first and only foster failure. He and his siblings (Patty and Skeeter) came to me at 5 weeks old after being abandoned at the shelter in a crockpot. A crockpot! Doug stayed with me longer than his siblings due to a long list of medical problems (dehydration, malnutrition, mange, etc.) After feeding him puppy formula with a syringe day after day, sleeping in the floor with him to keep him on a heating pad, and one terrifying night where my husband (a paramedic) had to give him cpr on our way to the ER vet, I just couldn't let him go. 

The problem: Doug started out as a 5 pound puppy that fit in the palm of my hand. He is now a whopping 80 pound "bull in a china shop." My other two dogs are a 9 year old dachshund and a 4 year old dachshund. Doug has NO concept of how big he is! He is an angel with my one year old daughter, but he is a big, happy puppy that has knocked her off her wobbly feet a time or two. He also jumps straight up in the air with all paws off the ground nearly 5 foot high. He doesn't jump on people, just up in the air. I accept full responsibility in the fact that it is my fault. I was so focused on his recovery that I didn't devote the necessary attention to his training. Now I am in a pickle. If I introduce proper training now, will it stick? He is house broken and knows basic commands, but he needs a lot of work on other areas. Can I make him realize how big he is? Where do I start? Thank you for any advice!
<bot>: Male lab mix is 10 months old, male, and all muscle. Has no idea of how big or strong he is. What to do?