It's ok, we'll get there.
Can you post what happened today?
Yes, when they have a short nap, you need to cut back on the next A time. Great news about the hour long nap! That's progress, no?
When you get a good nap like that you can then go back to the extended A times as a nap 45 mins is considered an UT (undertired nap).
But once again, she was probably OT from that short 45 min nap and then was fighting it. So you get into that UT/OT loop.
Can I ask why you feel that she isn't eating well? What do you mean that her feeds are so small....ie time wise? Tracy recommend switching to a 4 hour EASY around this age, as they can sustain longer A time as well as time in between feeds.
Are you BFing or bottle?
If she is refusing to eat, is there a reason why you feel like you need get more into her? Usually babies know what they need better than we do. She just might not be hungry.
Is there any chance that you can go without pumping for a few naps to help her with sleeping? That way you can get into her room before she wakes up and start to apply pressure and/or shh/pat just as she starts to wake up in the hopes that she goes back into the next sleep cycle.
As an FYI, my DD didn't do well with the shh/pat as she got older so now we just put our hand on her leg until she settles down again. You just have to experiment to see what they respond to.
The fourth nap would probably be considered the cat nap anyways and not one that needs extending but I guess it depends on where you are in the day. Another option might be to put her to bed early instead of that last nap.
You also asked about how to extend a nap if they wake up happy and not crying....how long do you leave her before you go into her room? Is there a chance that she would go back to sleep if you left her (obviously not if she's crying)?
Let me know what you think.
Hugs! Hang in there!