To scared to try

Recently got prescribed gaba 300mg and I’ll just put it on the floor I have been smoking thc vapes since 2019 along with nicotine and with past experiences alcohol has joined the party as well. Sucks to suck but I want help and I want to take this medication but the instructions state take before bed which means I have to go alllll day no substance. I can do it but damn this shit is irritating also if I choose to smoke tomorrow and take medication at 5pm would I be good or no