Hi,
To become an IPS officer, you will have to appear for UPSA exam. The eligibilty criteria for UPSA clearly states that a candidate should have finished graduation. So, after class 10th, it is suggested to first focus on Class 12th and finishing your graduation. You can prepare for UPSC while doing graduation too.
You can refer to this link for more details on UPSC: https://competition.careers360.com/articles/upsc-ias-eligibility-criteria#:~:text=As%20per%20UPSC%20IAS%20exam,must%20hold%20a%20graduation%20degree.
I hope this helped you.
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