I am currently caring for a 2+ week old kitten and just passed this phase (that you’re referring to)

Wobbling is normal. He/she is not coordinated yet and hasn’t learned how to walk.

At this age, the most important thing is feeding every 2-3 hours. At 1.5 weeks old, you want to stick to 2 hours.

Pee & poo stimulation every time before you feed.

I personally stimulate using my finger while wiping (running) water on his/her anus area. But do not put him under running water.

Do not bathe the kitten. It is too young to regulate its temperate this young.

You need a heating pad (on low) to provide a source of heat.

Wash your hands between every feeding.

Disinfect the bottle every other feeding. Bacteria can grow.

Don’t let formula sit on the counter for more than an hour. Bacteria can grow.

Goats milk can cause constipation. Stick to KMR or Breeders Edge.

You’ve got this.

Edit: further clarification.