Walks really are underrated for many things, especially losing weight since they allow you to spend like 200-300 calories by walking an hour at a decent pace (Which might not sound like much but it's over a tenth of the daily intake, very much not negligible), huh, Phat Fil ?
And assuming he doesn't stay up late at night solely to drink gin and hate-tweet (I know, I know, but bear with me for a minute), it also helps with that problem. There was a time when I would go sometimes days without sleeping and that f#cked my sleeping schedule up. Going for a walk at night to get some fresh air, tire and calm myself a bit, then shower is a great recipe for going to sleep easily.
Of course telling Phil that getting healthy might be a good idea isn't the most productive use of our time, but it really would be that easy to improve for him.
As to the schedule thing, honestly, I'm not sure Phil is that stupid to do it. He's not a regular streamer with lots of comings and goings among his viewers, with people dropping a dollar or two every now and then because "Oh, I had a couple hours to kill, watched you, I was entertained, here's your pay for the service, good sir/ma'am". Phil is essentially being paid a salary by a select few paypigs (With the vest goal, it's almost a literal one, 200$ dollars, rarely more, no less, every "worked" day), so it's not that stupid for him to actually have a schedule since he wants the same people to always be able to find him streaming, and repetitive, strict hours do that. If he changed his hours, how would IceCoffee be able to keep the streak going ? If Phil shifts his stream later, maybe he won't be able to wait for the small time paypigs to help him reach the goal; if Phil streams earlier, then he might miss the deadline altogether.