Seeing that no divorce attorney has jumped in yet, I will add a bit more general information. Some are not directly for the OP.
May family courts have self help program that pro-bono attorneys help you without making a formal attorney-client contract. Find phone number for your local court on website and ask about pro-bono attorneys for self help in divorce. Some are phone only. Face-to-face ones are better and they usually have a fixed time. You could visit another county’s court to get help, even if you can’t file your divorce petition there. There will be a waiting. Bring your music, book, and snack.
There are online forums that real attorneys answer for free or for a small fee. Google them. But avoid general forums where non professionals give wrong advise all the time. INCLUDING THIS ONE! The only real advise you can get here, and are getting plenty, is the advise to find an attorney. I am sure many people know a lot. But you can’t know what is the correct advise.
Well, except that your husband is screwing you big time. I think that is unarguably obvious. Possibly with some unknown malicious intent of economical benefit if his intelligence correlates his 6x times income. We can’t know why. Even experience divorce attorneys will need more information from you to guess why he is attempting something apparently so stupid. But if you try to rely more on nonprofessionals beyond emotional support, then you may end up believing a critical but wrong advise which you can be more inclined to believe.
As others have said, not all attorneys charge several thousand dollars of retainer fee. Some will give enough advise with hourly charge. Some will give free initial consultation. Call around.
If you have asset, then whatever attorneys fees you paid for the control of the asset may be worth may times more than what’s at risk.
If you have a custody issue, other than child support amount which is usually based on a formula, well, then it is difficult. Because it can really cost unlimited fund. In this case, find a good expensive attorney or even two if you could afford, or find a marriage counselor. They help with divorce too.
NEVER EVER think that the attorney your spouse brought up will represent your interest.