2 Corinthians 9:8 (New International Version)
8And God is able to make all grace abound to you, so that in all things at all times, having all that you need, you will abound in every good work.
It's ok to try something that may not work. You won't know until you try. You may stumble onto a wonderful solution. And if it doesn't work, you and your kids will survive, bounce back and try something else.
Prayer Suggestion: Ask God for new ideas.