I believe it is to do with Nexus 3K EEM version, unfortunately "wait" is not an available option either. I'm thinking of calling a python script to get this done. 

Thanks @Georg Pauwen, however "timer" is not an option available. I've only got clicounterfanabsentfanbadfibgoldinternal-link-flapmemorymodulemodule-failureneighbor-discoveryoirpolicy-defaultpoweroverbudgetsnmpstorm-controlsyslogsysmgrtagtemperaturet...

In steady state, interfaces will be in no-shut or enabled stated. However I wanted to keep interfaces down for two minutes after the reboot till it's processors are up and stable. 

I'm trying to achieve something similar, but what I'm looking to do is keep all interfaces shutdown on a 3548 for two minutes after reboot. Any thoughts how I can go about this?