Baby Steps are a good approach ♦♦ Things "taken in bite-sized chunks"  are easier to swallow !
** (Goalsetting =  I Listed,  at the End,  a GREAT #APP  for Everyone )

As for me,  I do a quik apple-cider vinegar drink in the a.m.  (reduces #INFLAMMATION );  then a Tall glass of Water .

As to #Fiber,  I often partake of BROCCOLI - adding a Mexican Dry Rub (spices) onto it,  b-4   STEAMING this #Vegetable .

Comes out wonderfully ! 

   
Then too, I eat whole grain cereals & also whole grain bread ♦♦  I use GF flours too   (I have Tapioca & #Coconut flour right now).

Tapioca is naturally gluten-free in its pure form.   I just got Tapioca - Small pearls --  naturally #healthy)

Liked yr Tip, "Have 2 days/week when you will eat only vegan or vegetarian".   This is an EZ way for people to begin !   **AS to Your pics,  like the 3rd one down .. it looks like GrannySmith #Apple  + Oats

 http://healthyeatingchildren.com/wp-content/uploads/2018/02/Pineapple-Juice-and-Fruits.jpg

P.S. -- An app to aid EVERYONE with #Goalsetting:
           >> http://Goal-buddy.com**

I do use #smoothies, too.   Sometimes I like to put PINEAPPLE in it (aids with sore throat prevention ).