Not much to add really, but I speculate you tried a few things,
and changed tack, possibly due to the wedge shape of the timber, and your dogs.
I reckon the same as all some sharpening required.
Should be able to cut arm hair without too much fighting, you don't need to
see a big pile of hair to get started though.
Might seem daft but many might argee, it's likely one of the best ready reckoners for an introduction of what sharp is.
Another assumption, but guessing it may have taken some effort/time,
so am suggesting having a look at the primary bevel/grind to see whether
it's gotten too steep and
bottoming out, i.e the heel rubbing before the edge
is contacting the work.
If you want to buy yourself out of this problem, should you not have the kit already...
then a fresh grind from the bench grinder, will take any notion this may be at fault.
Then following up with a 5quid Eclipse knockoff will get one there.
Grind up-to the edge, but leave a band of previously honed steel, say 1mm
as grinding the edge would burn the steel, and if somehow not, leave a less than desirable result.
Be very careful with overheating the steel, I reckon this may be less forgiving in winter than summer, bluing still occasionally happens to me, aware that those corners being more partial to blue,
and seemingly more so with the laminated square topped irons.
If very nervous when getting close, then knock off the grinder and work the last bit with the wheel coasting,
Get comfortable and have a bucket close by
(I use a 2L bleach bottle cut in half with a stone)
to dunk the steel into at the speed of a Aldi cashier.
To make this easy to get your desired primary bevel, permanent marker the whole bevel and aim for the centre whilst hand turning the wheel, (provided you familiarize
yourself with how long the bevel should be on a Stanley iron)
Good to see you've not got any damage to your bench surface,
i.e you can still learn to do things the easy way.
There's a few ways to approach planing face grain using a simple stop for thinish work like this.
Plane up a length to use as a planing stop which won't get lost,
say around the thickness of those pieces would be somewhere good.
To make this simple, clamp it if necessary.
Once you've got this planing stop/batten, (it's not going to get lost now)
then you can choose from various thickness
bits of timber whatever you see on hand, to butt up against the new planing stop.
I have another kinda permanent panel below, (this panel isn't going to get lost either)
which is used for raising thin work, and you find something to suit it.
This planing board is also good for a planing stop for thicker stuff,
but another reason it may be advantageous is the fact it will scoot you away from the wall, which may be problematic with a longer plane, should you decide you like'em.
You could even use some sheet goods for supporting the work,
but I'd suspect the edges would get mashed for the use below.
Point being the sheet goods like melamine might be quite flat, provided its not sitting on a bump, and is resting on the nice unmarked surface,
so would likely show you the high spots making it easy.