Do anyone have experience to send some documents after process start. They ask me to send some information. will it effect my time?
To some extent it depends on how much information they ask for.
If it's one of the more extensive requests (RQ or PPQ-QA) it is likely to slow down processing.
If it's one of the less extensive requests ("RQ-Lite") it can slow down processing, but often does not.
If it's a fingerprint request alone, it tends to not have much impact at all.
(The names in parentheses are the ones commonly used on the forum. There are some discussion threads about the different types of information requests; searching for those terms can help you find them.)
If you can and are comfortable doing so, please share the document name (it's in the lower left corner, usually of the form IMM<number>E followed by a date in parentheses), and tell us which documents they asked for? It can help others understand these processes better, and can also let people offer you some more information about what to expect next.