Hi
@ouchie!
At three months out, each one of those in itself is safe to do, but too easy to overdo.
My suggestion is to select just three exercises per day, rotating through them on different days, and with a couple of rest days per week just for walking and daily life. So you only repeat a given exercise a couple of times a week.
Try a single set of 12, done as slowly as possible, in time to your breathing, rather than two sets per day. After a week or two, if all is well, increase to a single set of 15.
After another week or two, if all is well, try adding a second daily set of 15.
I really like exercising for strength, but post op was very cautious about ensuring my muscle and tendon health. This is the kind of approach that worked for me. It's by no means THE right way, so take with as many grains of salt as needed and do what works for you!