Wow Sis, this is heavy. LORD have mercy on you and your husband. Praying for His intervention here somehow. We know He is capable of miracles and would pray that way.
Overwhelmed is understandable. We pray for peace in your home and a calm over the children. A managability in all affairs. Provision for all needs and help from every source possible while you go through this. That you don't feel alone and His presence is real to you and your dear husband.
That seems to be the main thing - that neither of you feel alone through this trial. I pray GOD manifest Himself in these days of turmoil, even in the small things and needs. That He touch you with His Peace, that He is an ever present help in the time of trouble. I pray you both have time to read His Word together and pray together.
You will have a lot of prayer warriors here to pray for you all. May His Mercy be felt as new every morning - with His deep-deep Love.
The LORD Bless you & Keep you in His tender care, in Jesus.
GOD Bless you all.