How to reduce gif size (I assume you already know how to make gifs) 

Bla blah blah yadaa yaddaa yaddaa you have made a gif but stuck in this stage

Now,look for COLOR

And look for this

Click that part,then OPTIMIZE TO FILE SIZE then set the DESIRED FILE SIZE to 999k. You will notice that the Color has been reduced,and so does your gif size~SAVE!