What is the best time to switch jobs after your first job?

Hey i am a data scientist working at 12 lpa at series b service based company ,just completed 2 months rn ,right out of college, regardless to say that it's my first job What will be the ideal time for me to switch at higher pay and bett...

What is the best time to switch ? What % hike I can expect ? I am L9 resource with 8 years experience- 13LPA package

Like before appraisal which you know you’ll get “chillars”. Mid year or before appraisal.