There are many things which could be affecting your husband. If a neurologist read an MRI and said "MS", that neurologist did you a disservice. You need to make sure your husband's appointment is with an MS Specialist. Here in Kansas that limits you to Wichita and Kansas City (to my knowledge). I drive to KUMC and see Dr. Lynch. I have been a patient with the KUMC MS Clinic since 1982.
Your husband needs to run through several tests to eliminate the diseases and disorders which can mimic MS.
I would encourage you to avid "Dr. Internet". There are a few good sites but thousands of "Quack" sites which promise you the sun, moon, and stars.
A good thing you can do is to look back on the most recent events and write them in a journal. Then, if possible, go back even further to see if there are not similar events or seemingly insignificant events which he may remember, but dismissed. Also, keep the journal going forward. You can use it to determine if there are triggers which cause symptoms to present. Note the temperature, the barometric pressure, etc. Also look at any foods or environmental triggers.
Prior to the appointment, summarize the symptoms into types and duration.
I would encourage you to return here and keep asking questions from fellow MSers who are not out to sell you any snake oil. Keep things relaxed (even with the holidays) and make sure he is getting adequate rest. March is not far off, but March will only be the start of further tests. With any luck, you should be closer to answers if not have answers by April, but there is no guarantee.