Don't worry about it! I have frogspawn too and I don't feed it because if it gets even a little light it's fine, it gets it's food on it's own. Mine are doing great and more branches are even growing off from it! They are very hardy plants! They are there for you to enjoy not for you to stress out about them! Take my advise! At least don't feed them for a week and see what happens! I've had mine for two months and have ever fed them! Trust me!!!