You need to have both a reason to follow up with your decision makers and agreement that you will follow up.
The second part is important because it sets the expectation that you will email/call once every two weeks to see how things are going. This should be agreed at the beginning of the RFP process.
Also “getting back to you soon” is an objection. You should follow up with “Amazing. When are you thinking for the follow up so I can make sure it’s in the diary”.
