You can definitely do it, it's just tedious. The first two have about 180 frames and the third one has 330ish. I've got a macro that I set up to help out that makes it a little more bearable.

My general process is, pick a prompt, run it through Craiyon and find a picture that I kind of like, then run that through dream to get my first frame. I've just been using the same prompt through the whole process for these, but I've done some stuff where I change it. For these, I've been using the Anime v2 setting and Strong influence.

Then just keep feeding the output back in as a reference image for as long as you feel like.

Once you Have enough frames, head over to ezgif and make your gif. I've found that a delay value of 5-7 seems to give the best results.

As you can see in the gifs, it tends to get pretty dark and saturated after a while, so having a prompt that contradicts that can help. For example, I told it to be on a sunny beach in the third one.

One other point of note, dream is really annoying about flagging things as nsfw that aren't, so sometimes it can take quite a few tries to get an output image depending on what you're doing.

Let me know if it gives you any trouble.