[header] How to gain weight if you have diabetes [title] Eat frequently. [step] You may find that you feel full after eating very little food. If this is the case, eating the standard three meals a day may cause you to not eat enough at these meals. 
Instead of trying to eat three large meals a day, break those meals up, eating more frequently. [substeps] Eat five to six meals a day, instead of the three or two usual meals.