You should get this submitted if you have not already. For us it took a couple of weeks to get all the paperwork together (including photos taken with the official Canadian format, which we were able to get here in the US), then it took about 9 months from when we submitted the paperwork until the Certificate of Canadian Citizenship showed up, then it took perhaps 2 or 3 more weeks to get a Canadian passport. If you are starting 12th grade in September, then you have a bit of time but should get to this.
The only significantly annoying issue that we found is that it is very complicated to fill out US tax returns if you work in Canada. If you purchase a home in Canada, then when you sell it you will owe taxes to the US. Of course the pandemic has also been an issue due to the border being closed, but I think that I heard that it just opened up to fully vaccinated people. I am carefully holding on to my vaccination card.