Rejected visa D/Family reunificiation. Should I reapply with a lawyer?

I am from the US, and my husband is Belgian. We met and married in a country in Asia, where we are currently still residing. We decided to move to Belgium, but it's been a complicated process. He was working for many years remotely for a company here in Asia and originally planned to continue working for the same company by registering himself as self-employed and invoicing the company each month. When we applied for Visa D/Family Reunification in December, we supplied them a contract from that company which reflects that plan and the embassy accepted it.

In April that situation fell through and my husband chose not to go along with that remote work/self employed option and instead to look for a job in Belgium itself. Currently, he has two job offers on the table and is moving back to Belgium without me next week. I also recently found out that my visa D was rejected. I find out the reason next week but I am speculating its because of his choice to work remote/self employed and it falling through. I didn't notify immigration, as I was waiting on him to have a new contract to replace the old one. Im not surprised the visa was rejected due to the instability of it all.

My visa here in Asia is ending soon and the plan is for me to fly out to Belgium sometime in September or October and start the process over again while in Belgium. At this point he would have been working at a new job, re-registered for the health system, and hopefully have found a place for us to stay (that isn't his parents') but I am wondering if, at this point it's best to get a lawyer? We are getting a bit discouraged with the whole thing.

Any insight to this whole thing would help me a bunch.