Hi look if you’re ejaculating quickly while masturbating nothing to worry about. And it will not consider as Premature.
As we all know the triggers point of our penis so it ejaculate quickly, you can notice change in timing if you masturbate from another hand i.e if you are using right hand try left it will help.
Next Steps
Don’t worry at all.
Health Tips
Try to masturbate just twice or thrice in a week.