I was also somewhat depressed on Beta blockers.
On some sites, you can read how Beta blockers influence our brains after reaching inside a blood-brain barrier.
Nightmares, depression, bad mood, lethargy etc
Also, you can feel depression (imo) because of a few reasons:
1. unrelated to BBs
2. due to BBs, side effects
3. due to feeling bad on BBs, and then developing a depression because you can't do anything (walking, living a normal life) due to BB's side effects
4. the same applies to your original disease. If you can't live a normal life due to your disease, you can fall into a depression.
So, it can be any of these. Or 2-3-4 of them mixed.
About cutting a pill, I have wrote in the past on other threads: don't worry. You don't need to cut a pill exactly the same each day.
For example, if your pill is 2,50Mg.
Then, if you cut it in half, that will be 1,25Mg.
If you cut it in 4 pieces, that will be around 0,62Mg.
Now, if your current dose is 2,50, you don't need to lower it only by 0,10 (imo).
You can lower it right away for 0,20 or 0,30Mg.
(The differences are bigger on lower amounts. Even with a lowest amount of a drug, you will get some "base" amount of a drug, and everything after that is only a small upgrade. So, if your HR drops from 80 to 70 on a 1,25Mg dose, it won't drop 4x times more than that on a 5,00 Mg dose. So, when you take a 1,25Mg dose, your HR will drop from 80 to 70. While on a 5,00 Mg, it won't drop from 80 to 40, but more likely to 55-60. So, an effect is lower on larger doses.
The same, on a 10Mg dose, your HR won't drop from 80 to 0, but from 80 to 50-ish. So, you see, a drug has a strongest relative strength when you go from 0 to 1,25Mg. So, it will be easier to lower your dose from 5,00 to 4,50Mg than from 1,00 to 0,50Mg.
From my experience, going from 0,50Mg to 0,00 is the toughest.)
Anyway, let's go back to your doses. You should just do this: if you have a 2,50Mg dose, then cut a pill in half to 1,25+1,25Mg. Then take one part of a pill (1,25Mg) and cut it in 4 pieces (0,30Mg each).
Then take 1,25Mg + 0,30 +0,30 +0,30 from now on and throw away one piece of 0,30Mg each day.
That will be around 2,20Mg dose in the first "weaning off" days.
Or, if you want to go slower, throw away the piece which seems to be the smallest (try to cut it in around 0,20Mg).
Anyway, nothing will happen if you will take 2,20 and 2,15 Mg on the next day. That is more or less the same.
So, you don't exactly need a pill cutter.
You can do it on your own.
You will just need to cut bigger and bigger parts which you will throw away.
(Over a few weeks, don't increase the size of a thrown away part daily).
When you'll come to 1,25, do the same.
Cut a tiny part on a side of a pill each day.
And over days and weeks, cut (and throw away) more and more.
Again, nothing will happen if parts won't be EXACTLY the same.
Also, you can do this: when you are at 1,25: take 7 pills of 1,25Mg size.
And cut (and throw away) a tiny part on each of those.
And then in the next 7 days, just take 1 by 1 in order: from the biggest pill (after cutting) to the smallest.
So, let's say that you have cut them manually and that you have created 7 pills with: 1,00Mg size, 0,98Mg size, 0,98Mg, 0,96Mg, 0,95Mg, 0,94Mg, 0,92Mg.
Then just "look" at those 7 pills and start with the largest one on a day1 and end with the smallest one on a day7. (1,00Mg on a day1 and 0,92 on a day7).
Then repeat the same in the next week (you can cut off and throw away larger parts in the next week).
Or, if you aren't feeling well, stay on the same dose for a few days/week.
In short, you don't need a precise pill cutter.
Just use some maths and write a diary about how much you are taking each day and you can "manually" create smaller and smaller pills by yourself.
I personally didn't have a pill cutter and I have weaned off from 0,62Mg to 0,00, as explained above (And from 1,80Mg to 0,00 in my first attempt).
So, I wasn't EXACTLY on 0,30Mg and 0,20Mg dose.
I was just taking smaller and smaller pills each new week (or I would stay on the same dose if I didn't feel well) and in the end I started to take only tiny parts which looked like a dust (that was probably around 0,02Mg or 0,03 Mg).
Then you should just take that lowest dose: once in 2 days for 7 or 10 days.
If you will feel fine, then take the same, lowest dose, once in 3 days for 10 days.
And then stop taking it and try to hold on.
You should be fine eventually.
One more time, long story short: you don't really need a pill cutter.
You can do it on your own slowly, as explained above.
Good luck and feel free to ask whatever you need.