I have never used it on a pet, only on myself, however I have found something here that may give you guidance. What you are doing seems fine mix it with home made food, to avoid any of the ascorbic acid (antioxidants) found in commercially made dog foods.
A dog has a higher level of acid in their stomach, so they caution not to activate it with HCL, which you probably already know. I would not give myself a capsule of MMS, that is not mixed with water so I would not give it to a pet that way either.
I do not know if you have used MMS on yourself before.
In the first link;
The author talks about making some home made bone broth and offer the dog in a small bowl a bit of bone broth with MMS every hour. 1 drop of MMS per 10 ml of bone broth, which is 3/4 a table spoon.
I do not know of the volume of hamburger you were using for 1 drop. The author talks about premixing it in a bottle, I would be cautious, I am 200 lbs and took 3 drops an hour, mixed with 2/3 cup of water, every hour for 8 hours over a period of 3 weeks and it helped me a lot. 1 drop for a twenty pound (10kg) animal seems a bit high
Second link
They draw 2ml of the premixed solution into a 5ml syringe , which is an extremely small amount 2ml= a bit less than 1/2 teaspoon, they mixed in a bit of milk and feeding the dog like a gentle squirt (Syringe no needle) to the back of the throat. That 2 ml solution is two drops of MMS, seems strong, if your dog handles this okay, it may be okay with two, depending on its weight. That 5ml syringe full is only 1 teaspoon.
I myself would go the plastic syringe route because the MMS may start working on any bacteria, or slight amount of pathogens in the hamburger meat, although they might be trace. They also place ascorbic acid (antioxidant) in hamburger meat which prevents it from turning brown.
First link
m.facebook.com/celineduburganchen300/posts/2044180662539453
Second link
mmstestimonials.co/animals
Scroll down to;
Read this,
UTI In Dog, Cancer And Infection Control
Then further scroll down and read
Cancer Cured In Dog. ( Lymphoma)
Hope this helps
Regards