"We've decided that we want to buy a house, but we need to have a larger down payment. So we aren't going to be able to pay the full rent amount for the next few months because we need to put that money into savings"
Congratulations on taking the steps needed to buy a home. It is important to remember that in addition to a down payment you may also need to prove a payment history, as well has have good credit. Ending up with an eviction and/or a judgement on your record will also negatively impact a mortgage loan.