Hi wjmaroo to the last figure. That's like running a marathon daily. I'm pretty keen, and I definitely can't do that, and I play a lot.
A few questions. The guitar you're using. What type? Is its action OK. Is its neck a good fit with your hand? Do you know what string gauge and brand is fitted? High action and high string tension will make an acoustic guitar in the particular more difficult to fret, especially for a beginner.
Anyway, which song specifically are you having problems with and which chord changes?
It's pretty pointless attempting to play any song until you can form the necessary chords, and once you've mastered that, can then change confidently between them. Do that first, or trying to play a song will just be a depressing exercise in frustration and failure.
[br]There are lesson exercises for changing chords, although it's just a common sense mostly. So unless you have a hand injury, arthritis or some co-ordination health issue interfering with doing that, with that amount of practise, a week should see you capable of fluently changing from ADAEA repeat 'n repeat 'n repeat gradually building speed and arguably more.
[br]Expand from there. If you've been doing Fundamentals 1 you should have C, Em, Am G under you belt by now. With G, Em, C & D or D7, you can play a zillion songs. Similarly C, Am, F, G.
Do that with the chords for the song you want, then stitch the song together slowly at first, eventually increasing to tempo. Picking a song you really like but within your competency will provide the drive. Success reinforces confidence.
In parting. Here's a gem I love which you can play with just two easy chords."A Horse With No Name" by America. Em and a chord with a complex name but simple shape. That's it. Just an easy swap between at moderate tempo back and forth between those two chords, get the strumming right and you've got the rhythm for the song.