Crying all time without sleeping.

Hi Doc, infant of 2mon is not sleeping for last 2 days. First I thought it is coz he has not passed stool which make him uneasy but even after pooping he is not sleeping. Out of 24hrs he just slept for 4-5 hours overall. After every feed I make him burp and give colicaid in morning & night to avoid gas issue. He also crying each time when putting him on bed while he asleep after feed or I stop giving him feed. I stopped giving milk coz since then he is asking for milk everytime and then once or twice he spit out extra milk. To avoid overfeeding when I refused to give BM( not sufficient so need to give FM also) or FM he start crying. Also after giving FM I have to put him on breast coz he demand more milk but when put him on breast he fall asleep just after 5-10mins and wake up again in 10-15mins and start crying. Please tell me what should I do because the baby has not slept well and I haven't that sufficient milk to offer. How can I soothe him please advice