Sooze - have you tried W2S yet? It sounds like Dylan might have forgotten how to go back to sleep during the day, or he's too excited about doing something else, so as soon as he knocks the edge off, he's ready to get up and go. That sounds like it could be developmental, if it's the latter, which is good news - maybe he'll learn a new trick and then be over it.
Nevviemama - ooof! Sounds rough! Like Susan said, daytime sleep does sort out between 4 and 6 months (especially if you're working at it), so it will get better. We had some tough times between 3 and 5 months and there were times I thought I wasn't strong enough for this motherhood stuff. Elsie's now 7 months, and I still get the occasional 30 or 40 minute crap nap, but she's doing much better about giving me at least an hour most of the time. I didn't check in on this thread for a few days and got behind, so was trying to catch up last night before our DF. I was a bit bleary eyed, but I think there was some talk about W2S. That was my last resort with Elsie, because I just didn't see how waking her up could be a good thing, when she was already taking cruddy naps. But amazingly, it was exactly what worked for us. Sounds like you might be doing it a bit late, though. If you can watch an entire nap, it will really help to tell you when you should do it. I found that E first stirred around 25 minutes, though just barely - like moved a finger. Then again at 35 minutes, she'd maybe turn her head or grunt, and then if she made it to 45 minutes, she'd grunt, groan, kick her legs a bit, etc. Usually that's when she'd be up for good. The good thing about that watching/learning nap is that you're right there to hopefully get her back down before she fully wakes up. Then the next time you can go in about 5 minutes before the first stir and wake her a little. I did ruin 2 or 3 naps before I figured out what worked, but then when I found it, I was scared to give it up and ended up doing W2S for 2 months before I got the nerve to try a nap without it. Anyway, what worked for us was going in at 20 minutes, restarting her lullaby CD, and then scratching between her shoulder blades (she's a tummy sleeper) until she fluttered her eyes. Then I immediately ducked below the crib bumper so she couldn't see me if she opened her eyes, and she'd go back down. The first couple of weeks, this got me 1 hr 10 minute naps (when it worked - more than half of the time), and then she started going longer than that on occasion. I think the 1 hr 10 was just the end of the 2nd sleep cycle, but then she must have learned how to get past that on her own, because doing W2S twice in one nap didn't work for us. I don't know if that helps at all, but you might give it a try. If not, I've also noticed that the more relaxed I am, the better Elsie does. That's a lot harder when there's a lot of screaming going on, but it will pass, and I bet by around 6 months, you'll have a much better napper with a big personality to entertain you all day! Good luck!