change in dogs scheduled insulin injection?

No you don't sound like a terrible doggy mom. Sounds to me like you have been doing a great job! Keep it up! Inevitably there will be times that you cannot give the insulin at the exact right time. It's not a big deal as long as it doesn't happen every day. You can give the insulin a little bit early, up to 1-2 hours early, but if you do this make sure that the dog eats a meal at the same time. Giving insulin early can lead to low blood sugar, so feeding at the same time will help to minimize the risk. Alternately you can give the insulin 1-3 hours late, that wouldn't be a big deal either. If in doubt, skipping a single dose of insulin isn't that big of a deal either. You should be pretty safe doing either, and I really don't see a big difference going one way or the other. I am a vet, and if a client called in and presented me with this question, this is what I would tell them.

1

High blood levels of glucose can cause several problems, including frequent urination, excessive thirst, hunger, fatigue, weight loss, and blurry vision. However, because type 2 diabetes develops slowly, some people with high blood sugar experience no symptoms at all. How to treat diabetes naturally https://tr.im/5DNNl

Symptoms of type 1 diabetes:

Increased thirst

Increased urination

Weight loss in spite of increased appetite

Fatigue

Nausea

Vomiting

Patients with type 1 diabetes usually develop symptoms over a short period of time, and the condition is often diagnosed in an emergency setting.

Symptoms of type 2 diabetes:

Increased thirst

Increased urination

Increased appetite

Fatigue

Blurred vision

Slow-healing infections

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If you think you have diabetes i think you should have a checkup and speak with your doctor just in case.

2

You need to call your Vet and ask him/her this question. Don't take the advice of a bunch of online strangers that might steer you the wrong way, which could put your dog's health in danger. Just pick up the phone and make that call.