Smt. Shivagami,
There are enough members here to tender advice on topics like poojas, gods, prayes etc. But from whatever you have posted so far (unless these are all just falsehoods made in order to fool us) you have a small child and now you say your husband is not eating and ignoring to eat. You say that he is refusing to come to medical checkup also.
Either he knows what his disease is or may be there is some other psychological reason. But not eating is not at all a good symptom and this could mean even very serious diseases. So, if you do not want to repent later on, please beg him to come with you to a good allopathic doctor and get the necessary tests done. Annapoorna will not be able to do even the smallest stethoscope examination on your husband since she (annapoorna) cannot come in person. So, please don't live in a bygone era, and rush him to a good doctor.
For your information (if you are less than 30 to 35 years old) perhaps you may not know how we in India suffered on account of small-pox every year and lakhs of people died. We were using religion to ward off this disease, just as you plan to do pooja to Annapoorna now, but nothing happened. It was only the allopathic "vaccination" (அம்மை ஊசி) which ultimately could wipe out this disease from the world.
Therefore, please do not take the pooja, prayer, god/goddess, swamiji/guruji line for all things; one should use appropriate methods for each problem.