We understand your concern for your brothers and their well-being, and we join you in praying for them. It's commendable that you are thinking of them and desire a closer relationship with God for them. In all things, we should desire for God's will to be done and that He will be glorified through all things.
First, let's address the communication and support to help you navigate this situation. We are instructed in Romans 12:18, If it is possible, as much as it is up to you, be at peace with all men. This may mean that you need to reach out more frequently and not just when there is financial need. God wants us to be unified in our families and to be at peace with all men. It is good to be at peace in your own household and family.
In 1 Timothy 5:8 we see, But if anyone doesn't provide for his own, and especially his own household, he has denied the faith, and is worse than an unbeliever. We are instructed to support and help our family. However, it is never good to enable them.
Regarding your brothers' relationship with God, we remember Proverbs 14:12, There is a way which seems right to a man, but in the end it leads to death. It's important to pray that God will draw them close to Him and not to wait for them to find God on their own. May God draw them close and awaken in their hearts a deep desire to know Him and serve Him.
We also pray for your health and your spouse's health. Trust God, who is able to do all things. You may want to consider the words of the Psalmist in Psalm 31:14-15, But I trust in you, Yahweh. I said, You are my God. My times are in your hand.
We join you in praying for your brothers:
Almighty God, we lift up the brothers of the one who submitted this request. We ask, Father, that You draw them close to You. Soften their hearts and open their eyes to see Your truth. Help them to seek Your face and not just Your hand. We also pray for the health of the one who submitted this request and their spouse. In Jesus' name, we pray. Amen.