Trending @Infosys; Notice period

I am currently working in a project and it is not started yet but received client laptop. Right now we are exploring the client internal documents while the team on-boarding is happening.

My allocation is ending on March 31st and in usual days they will extend it to whatever tenure they want. But I am going resign in next couple of days.

What could be the scenario? Will infy ask me serve the 90 day NP or they will let go of me this month end ?

Any insights/past experience will help.

Thanks in advance