h1b is under 221g admin process

My H1b process is on 221(g) pending administrative process. On 5-feb-2016 got a mail from fpu-hyd to submit us employer project client contracts. Which i am yet to submit and on 19th i got a mail from HYDADMIN@state.gov to submit my passort. Should i submit my passport first or wait for the docs from us employer to be submitted before submitting my passort

You can submit the passport based on most recent mail. Meanwhile you can continue working on other documents. If visa gets approved by that time, then no need to submit additional docs.

Asking for passport is a positive sign.