Is It Safe To Drink Coffee To Help With Constipation After Taking Milk Of Magnesia And Before Using Picoprep For A Procedure?

Gd mnin Doc , I took four tabel Spoons of Milk of Magnesia yesterday . No BM Took 30ml this mnin 7am with 3 Cups Warm Water. No BM thus far @ 930 al. Anything else I can do . I have a Procedure Thursday & need to take Picoprep from tmoro Wednesday. Can I drink Coffee to assist the Milk of magnesia? My sincere appreciation in advance.