I might well need to be corrected by someone on a Medtronic pump as I am on tslim, but certainly with tslim you set a daily max for your insulin and naturally to avoid severe hypos you will have been advised to keep it quite low and it will be based on what your typical total daily was, not on bad days like you are having. This will affect how much correction your pump will give you, it will need to ensure you have enough insulin in your total to keep giving your basal until midnight when it resets.
Nobody taught me this but when I struggled with similar on tslim I increased my total and it made a massive difference. I have a good friend on Medtronic so I will have a look at her pump when I see her next but I'm sure others can confirm if you can do this on Medtronic.
It might be wise just confirm with your team you are doing this, I let my dsn know I had done it and she was more than happy as it brought me back into range.