"sent in request 3 days ago"
If you mailed in the 9465 it takes 4 to 6 weeks for the IRS to process the request and either accept or reject it.
If you did it online directly on the IRS website you get an answer much quicker ... most times on the spot pending IRS approval later.
If you need/want to make a payment before the installments begin it can be done directly on the IRS web site :
<a rel="nofollow" target="_blank" href="
https://www.irs.gov/payments">https://www.irs.gov/payments</a>
