Lang visa to 4 year uni with low attendance

Hello!

I thought maybe it would be a tad easier to give some back story to explain my situation a tad more..

I am currently doing a 2 year program at a Japanese school and am set to graduate it this month. During the first part of my stay Covid was still very rampant and I ended up catching it and being out of school for about a week and a half. Maybe about a year into my studies I developed tonsitlies which came back two other times and it really messed with my attendance rating.
My whole goal as to why I did the language school was so I could go to higher education here in Japan after i finished the course.

Recently I got accepted into a program in a college that I really like and have been getting the paper work in order to go to immigration and switch my Visa. I ended up talking to one of the "guidance counselors" and they informed me that I will graduate the school with about a 77-78% attance rate.

I am very very nervous that me being sick and just suffering with depression may have fully caused me to miss my chance of attendanding the college..

So I would just like to know if even though I got accepted into the university are my chances significantly low of getting accepted by immigration to go since of my attendance at the language school? I'm not sure if this helps but I also had a job that I had kept for about a year and a half as well..

Thanks for any advice or feedback and I hope you are all having a good day!

Why are you asking people on a random forum about something that you've already been accepted to? If the school said you're allowed to go to it, why would you even be concerned about immigration? All immigration does it make sure that your activities line up with the visa you currently have. They don't care about your attendance, that would be up to the school.

You're probably just worrying for no reason.