With his corrected age it sounds like it might be a growth spurt... try offering more in the day. If you can fit an extra bottle in at some stage I would try that, if he is taking full feeds at night, he will need to pick the calories up in the day, so try offering one as soon as he wakes up, then breakfast & then about 1/2 hour before his nap offer another one.
With the rolling etc, I find I am having to do a long wind down & make sure my ds#2 is really relaxed & calm when I put him down for naps/bed, then I sometimes have to go back & repeat a few times, but the more relaxed he is the more likely he is to find his "own comfortable" sleep position, which now is sometimes on his belly... I think I have been doing this for about 3 weeks & think I will probably need to keep doing it until he gets to full on crawling... then again with standing & walking, if ds#1 is anything to go by, the next 6months are hard work with sleep.
You aren't alone, but I know that doesn't make it any easier