Hey maka sorry for your plants stresses, I think sticking to regular watering would be a good idea and not to go adding a surplus of newts back on...however if you do want to give your plant something that doesn't typically cause harm and will help sweeten and fatten and does not require being flushed out, you could add 2 tablespoons of molasses to each gallon of water. This may help so she isn't starving but doesnt recieve any additional damage.
Good luck with the finish, Happy Healthy growing 😊