Student Loans

Probably not the best place to come but I feel like I come to you ladies for all sorts of advice, so why not? Lol My husband has over $400,000 in student loan debt. Wondering if any of you know options on who to talk to about paying that off and etc. if any of you have experience choosing the best route to pay it off or have talked to a professional? It’s just so much money I feel like we need some advice before jumping in on paying more than we should in order to pay it faster or try to prolong it for smaller payments?