Severus had to get used to this body.
He had especially tried to get himself somewhere he could still experience having Lilly as friend without interruption. Except for maybe Petunia. He had to work on that. he had had years of trying to change more in that aspect.
Even though he acted 'mean' as a spy, it was still somewhat easy to get irritated or mad in the beginning because he was used to reacting to other people that way. He had changed, though, even before Lily died he realized he didn't want to kill or torture innocent people.
He felt save knowing he had a lot of practice with wand-less magic.
The first thing he had to do was transfigure some better clothes from his old ones. He knew now that doing magic with another magical parent in the same house did not get registered.
The clothes worked out really well. Expected from lots and lots of practice with the smartest witch of the century.
Now he had to find and duplicate food.
...
Severus slowly and carefully moved downstairs. He spotted his mother working on a potion. His father was nowhere to be seen.
In his memories she mostly ignored him. She also didn't seem to care about his change in clothes. He quickly moved to the cupboards, there was barely any food. After some spells to refresh the food and after duplicating the food(and leaving more food then he initially took) on a plate he grabbed a cup and, magicking some water, sat down.
Severus ate the food, looking at his mother from time to time. Apart from talking with her about magic and potions, she wasn't really that much of a parent. Still, it had been a while since he had talked to her. Was this even his mother, he wondered. But then, would the Lily in this world be 'his' Lily? Then he came to the point where had been many times before. He should just let it be.
Then there was also the fact that his body was very young right now, and he didn't know how to act like a small child.
He wondered if their relationship was doomed from the start. He sighed.
Maybe something for another day.
He put his plate and cup back after using a cleaning spell on them.
Upstairs in the bathroom he tried to take a look in the mirror.
He was shocked: A little boy, toddler aged, stared back at him.
"Merlin." A small kids voice rang out.
Then he looked again, and noticed his nose was still big, his teeth where still... not grown.
And his hair... Greasy.
After some cleaning spells for his face,teeth and hair, he looked somewhat better. He then cleaned the rest of his body and his clothes.
"And now..." He concentrated on his nose. He shrunk it a bit, along with some other subtle changes, like thicker eyelashes and slightly bigger eyes. Even his lips and cheeks.
When he looked again, he thought the boy in the mirror looked what others would find, 'cuter'.
It was horrifying.
What he was willing to do for being likeable now. He turned his face away.
Apparently, his parents noticed his changing face. And his new wardrobe.
Even 'subtly' changing things every day, like his face and cleaning things around him, where now noticed.
He just ignored his parents, and didn't talk. His mother would probaby explain it away to his father as magic, they would argue, he would put up a shield and a sound barrier. It was essentially the same as before.
His face had changed: He made the most conventional attractive face he could make, after experimenting.
If his mother thought he was a Metamorphmagus, he didn't know.
With the ability to transfigure anything in something else he thought he should make some money with transfiguring rocks into valuables.
But to eat some much needed meat, because he missed a lot of nutrition, he first transfigured an object to chicken, used a spell to not let it feel anything, and killed it clean and painless.
He eventually shared some with his parents.
He used an Undetectable Extension Charm on a transfigured bag to put away his mother's old school books.
It was very soon that he actually visited Lily.
He just knocked. Lily's mother opened the door.
"Hey sweetie, what are you doing here? Where are your parents?"
"My parents don't care about me, so I was searching for new ones."
Him and Hermione came up with this idea, whilst feeling completely confident from the Felix potion.
It didn't make it any less of a crazy idea.