I checked further and it’s very important that you and those close to you recite Ksitigarbha mantra as much as you can and make strong prayers for the success of the loan. You also need to make extensive offerings to Ksitigarbha. This can be done at your house. If you contact Potowa Center they can help you set up the offerings. The main thing is to make as many offerings of light, water, fruit and incense as you can and offer them to Ksitigarbha with strong prayers.