Maybe, but if the shot wasn't good I would expect the following PS to be higher rather than lower.
If you do try shooting the full amount at a +10, be sure you can be around to watch just in case the results are better than expected. When I try something like that I usually aim for a +4 (some people aim for a +2 or +3, depends on how worried you are and/or whether the PS was on the lower side vs. pretty high) so if I overshot I can catch it pre-nadir. Of course Bix just eats his regular food if I overshoot (he's a free feeder) and even sometimes when I really overdid it he was just fine (gained some weight!!!), so even if you do catch a lower # you might not need to worry, but just mentioning it for safety. Sometimes shooting early can give you unexpected results, other times you don't feel like you did anything different at all from the #s.