Tetra77150 Tropical 48 Count Vacation Gel Feeder Block, One Size (Pack of 48)

Can I cut this in half and give each half to a betta and expect it to last a week?

Can this be cut smaller? I have a small 3 gallon tank with one fish. Can I cut this into 1/4 and only drop 1/4 of it at a time?

would this work for African Dwarf Frogs?

Does anyone actually have experience of their Betta eating this?