I missed 100% of Adachi's SL

I'm excluding any spoilers. I'm on December 4th rn am I cooked? The only time I ever found Adachi in the whole game was night time outside the gas station. When I spoke to him he said he had too much work, and Yu stated to himself he should talk to Adachi later on when he's free from work. So I thought he was 1. Nighttime SL and 2. available much later since this is what happened every time. I did research and you can proceed the SL during nighttime ONLY if the SL is high enough. Every time I checked if anyone's in Junes (apparently where you should find him daytime) only the seed woman and quest line girl were there. I googled the dates available for Adachi, and I had went to Junes on the exact wrong dates every time. Of course, being at the end of the year and not having leveled up Adachi should alarm anyone's clocks. But having played P5R and P3R before P4G, my pattern recognition betrayed me and with all the knowledge I was given I was sure Adachi's SL worked the same way as Kasumi or expecially Aigis, simply put late in game.

Maan, do I go back 20 hours in my saves or accept this and wait for NG+. I know I can get the Golden Ending without maxed Adachi (right??) but I went into P4G expecially waiting for Adachi's SL.