Freckle6 has a point. I know you know you need to go for a legal appointment. Maybe the time has come to say you are not stalling, you are awaiting further advice. Either that or tell him you will be free to discuss it in three weeks (if by that time you feel you can get good financial advice).
Here's the reality: he is going to try to shame you to reduce his payments to the family. You feel ashamed, thus he might accomplish this if you're not careful. 2) He was part of the decision for you to have children, homeschool, and thus have reduced earnings. It could easily take 6 months to a year for you to earn a full-time income. You can only accomplish this by making other childcare arrangements. I continue to believe you cannot be healthy, homeschool, and work full-time.
He will have to pay more alimony if you are to continue to homeschool. He is going to be angry about this.
So what can you do? Make your appointment and get legal advice ASAP and stall gracefully.
Use the next month to think about a solution to this and what it may look like.
When you ultimately meet with H to discuss finances, only agree to do it in public or in a coffee shop if you think he is going to blow his lid.