Ask the attorney who did the guardianship agreement to please check the laws. If he had the guardianship moved to the different court, like from general court to family court or vice versa you never have to go back to court again. I also do not believe it stops being legal at the end of one year. The court must me involved for a court order to be stopped.
We had the same issue in Oklahoma. We went back at the end of the first year, showed documentation the kids were being taken care of, that we had spent their child support on the proper things, that they were attending school, etc...and then after the judge said good, let's set a date in one year our attorney said something along the lines of "this family has shown they are able and willing to provide acceptable care for these children and we ask that the court move this case to XXX court so the family does not have to pay additional court fees......" and a lot more about the hardships it would be for us to have to return each year. So he granted it and we have not been back in 5 years.
ALL guardianship is temporary. ALL the parent has to do is go to court, file the paperwork, ask for a hearing, ask the judge to terminate the guardianship, if the judge says they have to show they are now able to provide the proper environment, etc...then the judge will say yes or no.
Once that issue is resolved you will have the legal right to go to child support enforcement and request they seek the court ordered child support that the attorney would request. They will seek it and have it deducted from his pay check before he gets paid.
If he has lost his job there isn't anything they can do to make him have one. He may be looking every day but the economy is horrible. I would make sure that he knows you need to know when he isn't going to be able to pay so that you can budget for it. I let my grand kids dads know that right off the bat. The one always sends me an email but he is a steady worker and I can say I can bank on that money coming every week but I truly try to live without expecting it and count it as a bonus for groceries and other stuff like pizza night or something like that. I do need the money and it is a huge chunk of our food budget but if I store food properly and buy up when things are on sale then if there is not money that week I do have enough food, maybe not a lot of fresh stuff but enough canned ravioli and spaghetti O's to feed an army. My daughter has never paid a penny and is now on state assistance,
So, to make a long story short...find the original attorney and find out about doing the guardianship thing then in a year requesting it be moved to the other kind of court. Once that is done he would have to spend tons of money to hire his own attorney and then pay for yours, etc...to terminate the guardianship.