Advice on one parent moving first (US/JP)

I’m going to try and not write 30 paragraphs - here we go!

TLDR: One parent is moving 6-7 months before the other parent and kid - advice?

I’m 39/M wife is 43/F and we have a 9 yo daughter. In current situation - I have my masters in communication and film, but gave up career pursuit to stay home. Wife is a full time therapist.

We have been concerned with the current outcome of Medicaid. As my daughter receives services through the program (based on needs not on income) and roughly 40% of my wife’s clients use medicaid as their insurance. So cuts to this program dramatically alter our lives in the state.

I have the opportunity to move over to Japan and utilize my degree. It doesn’t pay great by American standards but it’s very livable by Japanese standards. I would have to leave this month, but my family wouldn’t realistically be able to follow till around April/May.

We would want my daughter to finish the current school year here and start the new school year at an international school almost asap as Japanese school years start in April.

Our state allows providers to do Telehealth from any location so long as the patient is physically in the state, so wife just needs me to sponsor her on a spouse visa, she’s set. So we have the prep time to get her paperwork started and she would also be getting the rest of the affairs in order back here.

I would be coming home in January for 2 weeks to help them begin transition prep and just to see them, so it wouldn’t be a cold 6 month separation.

So my question to you all - have any of you moved where there was a lead parent and the rest of the clan followed? Was there any strain long term or short terms? Would anyone recommend me finding an opportunity with a shorter lead time? Follow-up : does anyone think I’m overreacting about the Medicaid loss?