I also struggle with ongoing constipation which started right before Christmas. my diet is primarily plant based and lots of fiber
My doctor suggested I try a low residue diet which was difficult for me but I gave it a whirl
Didn't help at all
So I am back on my healthy diet and find that drinking lots of water and staying active and moving really helps
And when all else fails try a dose of miralax
Fortunately things are getting better for me
Good luck
Sally