Glad that Baby Morton will come home. I hope he loves to see his brother again and that the comfort of having his brother near will entice him to eat better.
With home testing we usually take a morning bg measure before meal, and 2-3 hours later, and then at midpoint of the the 12 hours that goes before last evening meal.
It's a learning curve for you in how to manage it, but people here put up a record spreadsheet, which the others can teach you and keep the bg result notes in such. Then when at loss on your behalf others more experienced can look at the spreadsheet and give you advice. As notes to go into the spreadsheet people also write food intake and other meds given at the same time.
Ask for the help in how to set up a spreadsheet from those more experienced and they will help.
I hope it all will work out nice, in the beginning it's bumpy but with time you will learn it all!
So glad for you Baby Morton will come home were he belongs and is comfortable!
Good Work on your behalf!
You are in good hands here.