accident Settlement offer help?

Hi Stephen here from New York I am on Medicaid and won a Injury case where someone hit me from behind when I was stopped at a red light. I won 25 thousand after lawyer fees. So my Lawyer told me the check needs to be put into a special needs trust fund so I do not loose my medicaid. I am okay with this and so is my dad. The settlement was reached 7 days ago and I accepted the offer. How much Longer will it take to get a specail needs trust fund made up does this take years days what? My lawer told me he should have the check in 2 weeks or less. So will the Trust fund have to be done by then? When should I asspect to have the money in my Special Needs Trust Fund Account he is going to set up for me? How long should this all take some told me 30 days or less is this true? Respond all with any and all help