Can I change fee status in UCL

I am now regarded as overseas as an undergraduate, however I will be getting my UK nationality this October, as the first day of academic year is at September, I will have to pay international fee for the first year, I was wondering if I could change my fee status from overseas to home in the second year.

how did you get the nationality?

Through immigration, do you know if I can change my fee status or is there any other way, as I am so stressed now 😭

Your fee status does not solely depend on your nationality. To be considered a home student, usually you must have lived in the UK for three years prior to the start of your course. If you were considered an overseas student in your first year, it's very unlikely you'd qualify as a home student in your second year.
Take a look at the specific requirements here: https://www.ukcisa.org.uk/Information--Advice/Fees-and-Money/England-HE-fee-status

Your fee status does not solely depend on your nationality. To be considered a home student, usually you must have lived in the UK for three years prior to the start of your course. If you were considered an overseas student in your first year, it's very unlikely you'd qualify as a home student in your second year.
Take a look at the specific requirements here: https://www.ukcisa.org.uk/Information--Advice/Fees-and-Money/England-HE-fee-status

I think you should contact the uni or UKVI

I am sorry, I meant to say I will obtain my permanent residence , I have been living in uk since I was 10 and I am now 18

I am sorry, I meant to say I will obtain my permanent residence , I have been living in uk since I was 10 and I am now 18

As above, fee status is normally determined by residence not nationality. Even UK nationals who have lived abroad end up getting classified for the overseas fees.

Whether your prior residence "counts" might depend on what kind of visa you were on. I have ILR and so as long as I've been resident in the UK for the last 3 years or so (which I have) I count as a home fees student (the fact I've been resident in the UK with ILR much longer doesn't really matter apparently).

I'd suggest contacting the uni to query your fee assessment.

I would have thought you ought to qualify as a home fees student in that case? It's similar to what mine was, and I've always been considered a home fees student. Although I had ILR before I applied to uni, which maybe made it simpler? However visa rules are pretty complex so, you may need to speak with experts about it! As well as the above suggestions of UKVI and the uni, you might want to get in touch with your local citizens advice bureau for advice.

Even so, because you were not a permanent resident on the first day of the first year of your course, you would not (usually) qualify for home fee status.

What visa were you on before?

This is the important part. One of the requirements is to have been settled (i.e., had ILR or citizenship) in the UK on the first day of your course.

I am meant to say I will obtain my permanent residence, in that case do you think is it possible to change my fee status?

Not sure, based on the above it sounds like you couldn't

You could ask if you can defer for a year and have them reassess your fees after you receive ILR? They might not be too happy about it though, and technically your deferred offer would be an international fee paying offer so not sure how that would affect things...

I am now regarded as overseas as an undergraduate, however I will be getting my UK nationality this October, as the first day of academic year is at September, I will have to pay international fee for the first year, I was wondering if I could change my fee status from overseas to home in the second year.