small meals are better than trying large ones. Pinks are great because no fur to deal with. If the pink is smaller than width of head, I would continue to assist feed daily until it eats on its own.

Once it is passing a semi solid fecal, I would suggest calling a vet to see if you can bring in a specimen to have a work up done. This is a proactive and cheaper way of doing things. If the results of the fecal come back clean, continue to do what you are doing. If not, you know to take it in for meds.