Interesting. I think we can make some calculated guesses as to how much he is pulling in monthly. I'll try.
127 Patrons - $10 and $25 a month.
Let's be generous and say 25% of that are $25 donors.
32 x $25 = $800
95 x $10 = $950
Current Patronage is 403. 403 - 127 = 276.
Let's be generous again and assume this time half of those are $1 donors and the other half are $5 donors.
276/2 = 138
138 x $5 = $690
138 x $1 = $138
So we have the following:
$25 tier = $800
$10 tier = $950
$5 tier = $690
$1 tier = $138
Total is $2578 a month USD.
So, I'd say a low estimate is $2000 a month, whilst a higher one would be close to $3000 a month. Not counting the $50 pledges because he just implemented them, and he didn't seem to have much interest on that front.
I'm going to say he has more $1 donors than my estimates and he's at roughly $2250 a month with Patreons.
Which means he was probably pushing $6000 a month on Patreon alone before all this happened.
Edit - Some of those listed are pseudonyms. So I think that is a realistic total, with the ones who wish to remain private providing pseudonyms.