Have you checked online for the feeders? When I had Alpha, I found everything I ever wanted to know about him on Google...I just can't remember what I found!
I think there is a delayed feeding tablet or something, for Betas...It sounded good. I was moving here from Vegas, and decided that three days on the road was not a good option for him. I still miss him! (LOL!)
I couldn't find any betta feeders. But I suppose I could do the mason jar method when I visit my parents. And it would probably be easier having a 1 or 2 gallon aquarium in my apartment. (My apartment is *tiny*.)