Hi, new member here! I had a Hoya bella which my late mother gave me. Sadly it didn't survive my last house move. But I took four cuttings, and they all seem to be doing okay. I put two in jars of water, one of which had rooting powder, and I potted two, both of which had rooting powder. The cuttings were taken in November last year. They're in a north west facing window. I don't have much other option as to where to put them.

The two in jars first. Should I be potting them now? They've both got very strong and long roots.

One of the ones in the pots is doing really well, and has loads of new growing points, and several new shoots. The second one is much slower, but does seem to be growing.

Here are the two in water:



I've not fed the two potted ones at all yet, should I start doing that now? I've been watering them quite often from the bottom, as that's what my Mum did, but the soil on the top seems very dry. Should I water from the top? And is there a preferable time of day? Many thanks.

Here's the first potted one:


And the second one, which is growing at the tip, and has several growing points, and what looks like a new shoot at the base of the cutting.

Good job!
I would certainly pot the ones in water now; I would use a smaller pot than the previous two, though.
It looks like the mix you used on the older two is somewhat dense; I would not use that again. A light African violet mix works for H. bella (or lanceolata v. bella if one prefers that taxonomy). Alternately, you could lighten that mix with perlite.
I do feed them right through spring to fall, then give them a pretty cool and pretty dry winter rest.
If your window does not get much sun be sure to keep them very close to the glass. Hanging in the window would be better than standing below it. You don't say where you are, but if you get super cold in winter you might have to pull them back then.
I always propagate a few new ones each year and give a few away to friends. They can give you back some cuttings if you loose yours…