Another Valentine’s Day PPP Club initiate, can you help me make a plan?

I'm not sure if I understand what "indirect light" properly means, but I've just moved this PPP to this shelf in fear that my previous spot didn't give enough of the correct lighting. I'm aware I need to repot, was planning to do so tomorrow! I should go a little bigger for root room, and get a chunky mix, yes? Last slide I've marked which leaves I'm referencing:

Is the yellowing on leaf 1 pic 5 natural or a care based issue? Soil still seems to be appropriately moist, watered every 2-3 days, checking often. I don't want to mess with her too much before repotting but I always worry about soil density in these store ought pots. Also see picture 6.

Leaf 2 is picture 4. I just let them ride to redistribute nutrients or get back healthy, right? I'm just trying to keep Mama alive, so I don't want to worry about what are good/bad babies, but do I need to prune, or BOLO for any issues there?

Leaf 3 is the thickest/heartiest of the leaves but she has begun to droop. This was my catalyst for looking for a new home. Part of the reason for moving her was to be sure she wasn't in direct window lighting. With the blinds down I feel like the light is more direct but you can see that some of the leaves will always basically be in the light. We are surrounded by trees so it can be hard to get MORE light in the house. Grow light is possible but not immediately.

I just want to know when to be concerned and what to pay special attention to!