I can understand where u are coming from. I quit my job and i am a single parent, but the one thing that is different about me is that i trust God. Romans 8:28 says it all works together for the good of them that love God and who are called according to his purpose. I don't regret tithing because if u sow a seed u will reap. The tithe is the only thing that u can test God about.
All I know is that God is working on all of us. He is looking to see if we still love Him and trust Him. Faith is the evidence of things hoped for the evidence of things not seen Hebrews 11:1. "I have never seen the righteous forsaken or begging bread". Trust in Him. He may be rearranging u as He is me, but know that it is for your good. Praise Him, Love Him and trust Him thru it. It is easy when He is blessing you, but be like Job. "Though he slay me, yet will I trust Him."
Be encouraged my brother and sister in the lord. Think about how far he has brought u. Count it all joy.
Think of his promise, eternal life. Realize that if there is no cross there will be no crown. Bless u both. May God give u the strength to endure and may your faith in Him be strengthened as well as your family.