fourteen week old miniature schnauzer who is otherwise crate clean and almost accident free during the day is consistently peeing in the crate between 3:45am and 4:15am even though we set an alarm and take her out at 3am and i cannot figure out if the answer is move the alarm later restrict water earlier or something else i am missing

okay so Pepper is our 14 week old miniature schnauzer, 6.2lb, weve had her since 8 weeks, and the daytime potty training has actually gone really smoothly. she goes on a pretty consistent 1.5 to 2 hour cycle during the day, we are usually able to read her signals (the loop around the rug, the sniff sniff sniff pattern), and we have had maybe 4 daytime accidents in the last 3 weeks total. so the daytime piece is going well and i feel kind of good about that part.

the overnight piece is where i am stuck. our schedule has been bedtime crate at 10:30pm with last potty break right before crate, an alarm at 3am where we wake up and take her out (she pees, sometimes poops, then goes right back in the crate and sleeps), and we wake her up at 6:15am for the morning routine. for about two weeks this worked great and she was clean through the night. starting maybe 8 or 9 days ago we have been finding a wet crate pad almost every morning when we get her out at 6:15, and the wet spot is dry-ish around the edges which our trainer told us means it probably happened 2 to 3 hours earlier, so somewhere in the 3:45 to 4:30 window after our 3am wake.

things we have tried so far that did not change anything. moving the 3am wake to 3:30am (still wet at 6:15). picking up her water bowl at 7pm instead of 8pm (still wet at 6:15). adding a second wake at 4:30am for two nights in a row (she was dry at 4:30 both nights so the accident is happening between 4:30 and 6:15, which means we are basically waking up every 90 minutes and i cannot sustain that for another 6 weeks). switching the crate pad from the fleece one to a smaller fitted one so she has less floor space (no change).

my actual questions. is the right answer to push the 3am wake LATER to like 4am so that the post-wake window lines up better with her actual capacity, or push it EARLIER so we get her out before she fills up. is there a normal trajectory at this age where the overnight reliability dips for a week or two as the bladder is growing or as we hit some kind of developmental window, and i should just keep doing what im doing. does anyone have a specific timing protocol from puppy training that actually worked for a small breed puppy in this exact window. my partner thinks we should just suck it up and do every-90-minute wakes for the next 4 weeks and i think there has to be a more sustainable answer than that. tell me what im missing