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Depends on the state. We call them Down Payment Assistance Programs which we should have. Some lenders are pushy. Some aren't. If I was in that Loan Officer's position, I'd ask when would be the best time to follow-up after you have talked to your husband on the 1st phone call. If you don't know, I'd arrange a phone call next week when you both are available.
OP -Yes, MRBs are legitimate programs backed by Freedie Mac. They are tax-exempt bonds that state and local governments issue through housing finance agencies. Bond loans are issued by state and local governments and subsidize the cost of becoming a homeowner for those who meet certain income requirements, either by lowering interest rates or offering cash assistance.
On your story, end of the day he is a salesman trying to make a sale. The important thing for you to be aware of is that You have the right to say no, since there are many salesmen selling the same product. I'd talk to your husband first, then walk-in to the bank you do business with to get started.
GL2U
In my state the Realtor and Mortgage person I am currently working with are NEITHER pushy the mortgage person did tell me you will need this that and the third so we can finalize and do that or this or get that started but he was never like HEY did you do this HEY send me that ....etc. He let me do it on my time and reached out to me randomly to ask how I was and if I had questions or how he could help. I don't think they should push you that would be off putting to me too I would def. keep my options open and look for reviews on those team/people